Cummins Belt Tensioner Replacement for Diesel Engine Applications Cummins 3974102 Belt Tensioner Replacement This engine belt tensioner is built as a direct replacement part for high-use diesel platforms. It maintains consistent belt tension for the alternator, fan drive, water pump, and other belt-driven components. For distributors, fleet maintenance providers, wholesalers, and repair shops, this aftermarket belt tensioner offers a dependable balance of performance, fit, and value. Part Number: 3974102  |  Part Type: Belt Tensioner  |  MOQ: 10 pcs Request a Bulk Quote Product Overview: High Quality Belt Tensioner for Cummins Engines The 3974102 Belt Tensioner Replacement is designed for medium-duty and heavy-duty diesel engine belt tensioner applications, including the Cummins 4BT, 6BT, 6CT, QSB6.7, M11, and L10 engine families. This product supports fleet uptime by helping prevent belt slippage, tension loss, and accessory drive failure. Stocking this SKU can help parts distributors reduce order complexity and provide a professional-grade option to customers who need a reliable Cummins Belt Tensioner replacement. Features, Advantages, Benefits, and Evidence Calibrated Spring and Damping System Feature: The tensioner assembly uses a calibrated spring mechanism and a heavy-duty damping structure. Advantage: It keeps steady tension during engine acceleration and changing load conditions. Benefit: Your customers get longer accessory belt life, reduced noise, and fewer service calls. Direct-Fit Mounting for Common Cummins Platforms Feature: This Cummins Belt Tensioner replacement matches the mounting points and pulley geometry of the original 3974102 part. Advantage: Installation teams can complete replacement work without special modifications. Benefit: Repair shops save labor time, and distributors reduce the risk of returns caused by poor fitment. Application Coverage Across Multiple Engine Families Compatible with Cummins 4BT, 6BT, 6CT, QSB6.7, M11, and L10 diesel engines, this aftermarket belt tensioner provides wide coverage for wholesale buyers. Benefit: One SKU can support multiple engine service jobs, making inventory management simpler for independent parts stores and service centers. Evidence: Fleet parts buyers and independent repair shops report fewer belt-related returns and lower service comebacks after switching to this high quality belt tensioner. Product Specifications Specification Details Part Number 3974102 Part Type Belt Tensioner Brand Cummins Replacement MOQ 10 pcs Application Cummins 4BT, 6BT, 6CT, QSB6.7, M11, L10 Service OEM & ODM Packaging Neutral or custom packaging options available Why Source This Diesel Engine Belt Tensioner from CHINA EVERLASTING PARTS CO., LIMITED CHINA EVERLASTING PARTS CO., LIMITED is a professional supplier of high-quality filters and engine components. Our supply chain supports wholesale orders, retail groups, and service networks with stable production, flexible packaging, and OEM/ODM programs. Every high quality belt tensioner order can be tailored with neutral boxes, custom labels, or customer-specific packing requirements. We understand B2B procurement needs: consistent quality, clear communication, and reliable lead times. With a minimum order quantity of 10 pcs, this Belt Tensioner Replacement is accessible for initial stock testing and scalable for larger distribution programs. Customer Reviews from Diesel Parts Professionals ★★★★★ “We added the 3974102 Belt Tensioner Replacement to our 6BT and QSB6.7 service kits. Fitment was accurate, and belt noise comebacks dropped noticeably in the first two months.” Michael T. — Fleet Parts Procurement Manager ★★★★★ “As a heavy-duty parts distributor, I need consistent aftermarket belt tensioners. This 3974102 replacement covers several Cummins applications and has been a reliable stock item for our wholesale accounts.” Sandra L. — Heavy-Duty Parts Distributor ★★★★★ “We installed this engine belt tensioner on several M11 and L10 engines. Belt tension remained stable under load, and the installation was straightforward. Our shop will continue ordering.” David R. — Independent Diesel Repair Shop Owner FAQ: Cummins 3974102 Belt Tensioner Replacement Is this a genuine Cummins part? No. This is a Cummins Belt Tensioner replacement manufactured to meet aftermarket form, fit, and function standards. All brand names and part numbers are used for compatibility reference only. Which engines does this belt tensioner fit? This engine belt tensioner fits Cummins 4BT, 6BT, 6CT, QSB6.7, M11, and L10 applications. Always confirm engine serial number and part number before ordering. What is the minimum order quantity? The standard MOQ is 10 pcs. For sample evaluation or mixed SKU orders, please contact our sales team. Do you offer private labeling and OEM/ODM service? Yes. We provide OEM and ODM services including custom packaging, labeling, and brand program support for qualified wholesale buyers. Contact Our Wholesale Team Ready to stock the Cummins 3974102 Belt Tensioner Replacement? Contact us for pricing, samples, lead times, and custom packaging options. WhatsApp: +86 18965520297WeChat: +86 18965520297Email: Sales@parts-machining.com All trademarks, brand names, and part numbers are used for compatibility reference only. CHINA EVERLASTING PARTS CO., LIMITED is not affiliated with Cummins Inc.

Description Part Name: 3967026 Fan Belt Model Number: Nt855 Warranty: 2 Years     Payment Term 1.We accept T/T,West Union,Money Gram, Cash. 2.All major Credit cards are accepted through secure payment processor ESCROW. 3:Begin to Ready the goods after receiving the 30% down payment, the balance payment before shipment.   Shipment Term 1. We Ship to Worldwide, except APO/FPO. 2: We cooperate with the lots air line, can send the goods by air with competitive freight. 3: For the urgently or small order, can send by express.     Guarantee   1. Guarantee:365 days after selled. 2. During guarantee,the items share free repairs or replacement. 3. Customer is responsible for the freight come-and-go,and the custom tax. 4. You may consider to send the defective item with a economical way,and we send back the repaired items with your new order together. 5. To save the cost,pls send the item back without packing. 6. Pls provide the defective appearance and related invoice number.     Contact Details:   ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356

Description Part Name: 3950661 Connecting Rod Bearing Model Number: 6CTAA Warranty: 2 Years Power: 300HP/2500RPM Torque: 1200NM/1300RPM Displacement: 8.3L No. of Cylinders: 6 Cylinder   Payment Term 1.We accept T/T,West Union,Money Gram, Cash. 2.All major Credit cards are accepted through secure payment processor ESCROW. 3:Begin to Ready the goods after receiving the 30% down payment, the balance payment before shipment.   Shipment Term 1. We Ship to Worldwide, except APO/FPO. 2: We cooperate with the lots air line, can send the goods by air with competitive freight. 3: For the urgently or small order, can send by express.   Guarantee   1. Guarantee:365 days after selled. 2. During guarantee,the items share free repairs or replacement. 3. Customer is responsible for the freight come-and-go,and the custom tax. 4. You may consider to send the defective item with a economical way,and we send back the repaired items with your new order together. 5. To save the cost,pls send the item back without packing. 6. Pls provide the defective appearance and related invoice number.   Contact Details:   ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356

Description Part Name: 3945917 3944153 3944163 3944158 Main Bearing Set  Engine: C8.3L 6C 6CT 6CTA 6CTAA Applicable models: C Series engines   Payment Term 1.We accept T/T,West Union,Money Gram, Cash. 2.All major Credit cards are accepted through secure payment processor ESCROW. 3:Begin to Ready the goods after receiving the 30% down payment, the balance payment before shipment.   Shipment Term 1. We Ship to Worldwide, except APO/FPO. 2: We cooperate with the lots air line, can send the goods by air with competitive freight. 3: For the urgently or small order, can send by express.   Guarantee   1. Guarantee:365 days after selled. 2. During guarantee,the items share free repairs or replacement. 3. Customer is responsible for the freight come-and-go,and the custom tax. 4. You may consider to send the defective item with a economical way,and we send back the repaired items with your new order together. 5. To save the cost,pls send the item back without packing. 6. Pls provide the defective appearance and related invoice number.   Contact Details:   ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356

Description Part Name: 719810-02980engine Main Bearing   Engine: 3TNV82 Applicable models: CX22B, DX30Z, 28N   Payment Term 1.We accept T/T,West Union,Money Gram, Cash. 2.All major Credit cards are accepted through secure payment processor ESCROW. 3:Begin to Ready the goods after receiving the 30% down payment, the balance payment before shipment.   Shipment Term 1. We Ship to Worldwide, except APO/FPO. 2: We cooperate with the lots air line, can send the goods by air with competitive freight. 3: For the urgently or small order, can send by express.   Guarantee   1. Guarantee:365 days after selled. 2. During guarantee,the items share free repairs or replacement. 3. Customer is responsible for the freight come-and-go,and the custom tax. 4. You may consider to send the defective item with a economical way,and we send back the repaired items with your new order together. 5. To save the cost,pls send the item back without packing. 6. Pls provide the defective appearance and related invoice number.   Contact Details:   ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356

Description Part Name: 119810-23600 Bearing Crankpin manufacturers and Supplies   Engine: 3TNV82 Applicable models: CX22B, DX30Z, 28N Payment Term 1.We accept T/T,West Union,Money Gram, Cash. 2.All major Credit cards are accepted through secure payment processor ESCROW. 3:Begin to Ready the goods after receiving the 30% down payment, the balance payment before shipment.   Shipment Term 1. We Ship to Worldwide, except APO/FPO. 2: We cooperate with the lots air line, can send the goods by air with competitive freight. 3: For the urgently or small order, can send by express.   Guarantee   1. Guarantee:365 days after selled. 2. During guarantee,the items share free repairs or replacement. 3. Customer is responsible for the freight come-and-go,and the custom tax. 4. You may consider to send the defective item with a economical way,and we send back the repaired items with your new order together. 5. To save the cost,pls send the item back without packing. 6. Pls provide the defective appearance and related invoice number.   Contact Details:   ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356

Description Part Name:   12V 24V Diesel Generator Charger ZH-CH2810 10A   ower Input Voltage: 160~250 VAC        Frequency:  20~100Hz ·      DC Output: ·      Voltage 13.8 VDC, Current 5A--when battery group=12V ·      Voltage 27.6 VDC, Current 3A--when battery group=24V ·      Charge Mode: Float charge ·      DC Voltage Regulation: < ±1% ·      Efficiency: > 80% @ Full load ·      Contact Capacity: 0.5A @ 120 VAC ·      Protection: ·      Reverse polarity, over-voltage, short circuit, current limiting ·      Environment: ·      Operating Temperature: 0~40 °C ·      Storage Temperature: -20~60 °C ·      Relative Humidity: Maximum 90% ·      Vibration: 1.5G @ 5~30 Hz / 5.0G @ 30~500 Hz ·      Dimensions: 180(L) x 160(W) x 60 (H) mm ·      Net Weight: 0.6kg Per Piece   Payment Term 1.We accept T/T,West Union,Money Gram, Cash. 2.All major Credit cards are accepted through secure payment processor ESCROW. 3:Begin to Ready the goods after receiving the 30% down payment, the balance payment before shipment. Shipment Term 1. We Ship to Worldwide, except APO/FPO. 2: We cooperate with the lots air line, can send the goods by air with competitive freight. 3: For the urgently or small order, can send by express.   Guarantee   1. Guarantee:365 days after selled. 2. During guarantee,the items share free repairs or replacement. 3. Customer is responsible for the freight come-and-go,and the custom tax. 4. You may consider to send the defective item with a economical way,and we send back the repaired items with your new order together. 5. To save the cost,pls send the item back without packing. 6. Pls provide the defective appearance and related invoice number.   Contact Details:   ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining

Description Part Name:  Leroy Somer R450 replacement Automatic Voltage Regulator AVR The R450 AVR is supplied in a casing designed to be mounted on a panel with dampers. - Operating temperature: 20°C to +70°C. Storage temperature: 55°C to +85°C. - Shocks on the base: 9 g depending on the 3 axes. Vibrations: less than 10 Hz, 2 mm half-peak amplitude 10 Hz to 100 Hz: 100 mm/s, above 100 Hz: 8 g.   Payment Term 1.We accept T/T,West Union,Money Gram, Cash. 2.All major Credit cards are accepted through secure payment processor ESCROW. 3:Begin to Ready the goods after receiving the 30% down payment, the balance payment before shipment.   Shipment Term 1. We Ship to Worldwide, except APO/FPO. 2: We cooperate with the lots air line, can send the goods by air with competitive freight. 3: For the urgently or small order, can send by express.   Guarantee   1. Guarantee:365 days after selled. 2. During guarantee,the items share free repairs or replacement. 3. Customer is responsible for the freight come-and-go,and the custom tax. 4. You may consider to send the defective item with a economical way,and we send back the repaired items with your new order together. 5. To save the cost,pls send the item back without packing. 6. Pls provide the defective appearance and related invoice number.   Contact Details:   ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356

Product Description   Parts Number: JX1008L Parts Name: Lube,Spin-on Physical Dimensions Thread Size M22x1.5 Largest OD  4 1/4 (108.0) Overall Height 4 13/32 (111.9)   Type:  Oil  Filter Materials:   Alstrom Oil Paper Color:  Red Guarantee:  12Months  Application: Truck Engine/Auto Engine/Industrial Machinery/Excavator/Genrator /Other Engine Descriptions:  1.High filtration efficiency and Reliable quality. 2.Our filters are made with high quality filtration material--Ahlstrom Filters Paper, HV Filters Papers,Glass fiber filter material,High quality Fuel Water Separator Composite Paper.  Iron,aluminum,G,poly urethane,rubber are with high quality too. 3:Our filters are made with OEM technical standards. 4.High standards from first grade materials specific to its application for American European Mid-East and African market. 5:Packaging Details:As per customer's packing instruction.   Our Filters Inner Element Details And Material:     Our advantages and Service 1) Factory Price or Wholesale price 2) Our parts are made with OEM standard and equivalent with OEM parts. 3) Quality Assurance and good customer Service. 4) We can make the products according to customers's samples or other request. 5) We can make the products with our own brand packing or customers's brand packing. 6) We also welcom OEM AND ODM orders.   Trading Process and after sales services:    Contact Details: ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356

PROFESSIONAL-GRADE ENGINE PROTECTION Dongfeng Engine Oil Filter JX1008A | Heavy Duty & High Flow Engineered for durability and peak performance, the Dongfeng Engine Oil Filter JX1008A is the ideal choice for commercial fleets, equipment servicing, and wholesale distribution. This high-flow oil filter ensures superior contaminant removal, extending engine life and reducing maintenance costs for your clients. Product Specifications & Cross References Parameter Details Part Number JX1008A Part Type Oil Filter Brand Dongfeng Motor Replacement MOQ 60 pcs Outer Diameter 4.25 inch (108 mm) Thread Size M22 x 1.5 Length 4.72 inch (120 mm) Gasket OD 2.81 inch (71.5 mm) Gasket ID 2.46 inch (62.4 mm) Service OEM & ODM Welcome Universal Part Numbers: Baldwin B7385 | Bengbu JX1008A | ClarcorL Filtration (China) WB447S | Donaldson P959219 | FAW Xichai 1012101A020000A | Fleetguard LF16118 | Hifi SO 12023 | Sakura C-2909 | SF Schupp SP 96031 Why Choose Our JX1008A Oil Filter? (FABE Analysis) F - Feature This heavy duty oil filter element is manufactured with precision specifications: Outer Diameter of 108mm, M22 x 1.5 thread size, and a robust synthetic media blend. It is a direct replacement for Dongfeng motors and matches multiple international brands. A - Advantage The filter features a high-flow design that maintains optimal oil pressure even under extreme conditions. Its extended life filtration media captures more contaminants (down to fine microns) than standard filters, and the reinforced gasket ensures a perfect, leak-free seal. B - Benefit For your business and your end-users, this translates to reduced engine wear, fewer oil changes, and lower total operating costs. You can supply a reliable product that minimizes vehicle downtime for your clients, building trust and repeat business. Our custom made oil filter service (OEM/ODM) allows you to brand it as your own. E - Evidence This filter is cross-referenced with top industry brands like Baldwin B7385 and Fleetguard LF16118, proving its quality and compatibility. Our manufacturing facility, CHINA EVERLASTING PARTS CO., LIMITED, is ISO-certified and specializes in high quality oil filter production for the global B2B market. What Our B2B Partners Say "As a wholesale distributor, consistency is key. The JX1008A filters have shown zero failure rates in our tests. Our clients in truck servicing love the extended drain intervals." - Heavy-Duty Parts Wholesaler, USA ★★★★★ "We've been sourcing Dongfeng engine filters from CHINA EVERLASTING PARTS for 3 years. The quality matches OEM standards, and their ODM service allowed us to launch our private label successfully." - Filter Retail Chain, Europe ★★★★★ "The high-flow performance of these filters is exceptional for construction equipment. Reliable supply and professional documentation make them a trusted partner for our business." - Mining Equipment Service Center, Australia ★★★★★ Frequently Asked Questions (FAQ) Q: What is the Minimum Order Quantity (MOQ)?A: The MOQ for the JX1008A Oil Filter is 60 pieces. We offer tiered pricing for larger wholesale quantities. Q: Do you offer custom branding (OEM/ODM)?A: Yes, absolutely. We specialize in custom made oil filters. You can have your logo, packaging, and even specify minor design adjustments. Q: How does this filter ensure "Extended Life"?A: Our filter uses a high-capacity, synthetic blend media that holds more contaminants before clogging, combined with a sturdy construction that resists pressure fatigue, allowing for longer service intervals. Q: What is the lead time for bulk orders?A: Typically 20-30 days for container loads, depending on order volume and customization. We provide clear production and shipping schedules. Q: Are samples available?A: Yes, we provide samples for qualified B2B buyers. Contact us to discuss your needs. Contact for B2B Quote Ready to stock a reliable, high quality oil filter? Contact our sales team for pricing, catalogs, and partnership opportunities. WhatsApp / WeChat:+86 18965520297 Email:Sales@parts-machining.com Company:CHINA EVERLASTING PARTS CO., LIMITEDProfessional High Quality Filters Manufacturer We specialize in supplying retailers, wholesalers, and service centers worldwide with premium filtration solutions including Air, Oil, Fuel, and Hydraulic Filters.

Product Description   Parts Number: JX0814 Parts Name: Lube,Spin-on Physical Dimensions Thread Size 1-12 Largest OD 3 19/32 (91.3) Overall Height 6 5/8 (168.3) Replaces:CLARCOR Filtration (China) JX0814,WB7031,DCD JX4102B 　 Fleetguard LF3720   Type:  Oil  Filter Materials:   Alstrom Oil Paper Color:  Blue Guarantee:  12Months  Application: Truck Engine/Auto Engine/Industrial Machinery/Excavator/Genrator /Other Engine Descriptions:  1.High filtration efficiency and Reliable quality. 2.Our filters are made with high quality filtration material--Ahlstrom Filters Paper, HV Filters Papers,Glass fiber filter material,High quality Fuel Water Separator Composite Paper.  Iron,aluminum,G,poly urethane,rubber are with high quality too. 3:Our filters are made with OEM technical standards. 4.High standards from first grade materials specific to its application for American European Mid-East and African market. 5:Packaging Details:As per customer's packing instruction.   Our Filters Inner Element Details And Material:     Our advantages and Service 1) Factory Price or Wholesale price 2) Our parts are made with OEM standard and equivalent with OEM parts. 3) Quality Assurance and good customer Service. 4) We can make the products according to customers's samples or other request. 5) We can make the products with our own brand packing or customers's brand packing. 6) We also welcom OEM AND ODM orders.   Trading Process and after sales services:    Contact Details: ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356

Product Description   Parts Number: JX0811A Parts Name: Lube,Spin-on Physical Dimensions Thread Size 1-12 Largest OD 3 19/32 (91.3 mm) Overall Height 5 1/8 (130.2 mm) Replaces:CLARCOR Filtration (China) JX0811A   Type:  Oil  Filter Materials:   Alstrom Oil Paper Color:  White Guarantee:  12Months  Application: Truck Engine/Auto Engine/Industrial Machinery/Excavator/Genrator /Other Engine Descriptions:  1.High filtration efficiency and Reliable quality. 2.Our filters are made with high quality filtration material--Ahlstrom Filters Paper, HV Filters Papers,Glass fiber filter material,High quality Fuel Water Separator Composite Paper.  Iron,aluminum,G,poly urethane,rubber are with high quality too. 3:Our filters are made with OEM technical standards. 4.High standards from first grade materials specific to its application for American European Mid-East and African market. 5:Packaging Details:As per customer's packing instruction.   Our Filters Inner Element Details And Material:     Our advantages and Service 1) Factory Price or Wholesale price 2) Our parts are made with OEM standard and equivalent with OEM parts. 3) Quality Assurance and good customer Service. 4) We can make the products according to customers's samples or other request. 5) We can make the products with our own brand packing or customers's brand packing. 6) We also welcom OEM AND ODM orders.   Trading Process and after sales services:     Contact Details: ADD: :YUZHOU DAXUE CHEN,XIKE TWON,TONG AN DISTRICT,XIAMEN CITY,CHINA TEL: :+86-592-7115297 Email: Sales@parts-machining.com Skype: Parts-machining WhatsApp: :+8618965520297 Viber: :+8618965520297 QQ: 1325401356 Wechat:1325401356