Cummins Belt Tensioner 3104029 Use For Cummins ISX CM570,ISX CM870,ISX CM871,ISX CM871 E,ISX15 CM2250,ISX15 CM2250 SN.   3104029 Details: 17.6×19×10.5 cm   3104029 Compatibility: Cummins ISX CM570,ISX CM870,ISX CM871,ISX CM871 E,ISX15 CM2250,ISX15 CM2250 SN,ISX15 CM2350 X101,ISZ13 CM2150 SN,QSX11.9 CM2250 ECF,QSX15 CM2250,QSX15 CM2250 ECF, QSX15 CM2250 X115,QSX15 CM2350 X105,QSX15 CM2350 X106,QSX15 CM570,QSZ13 CM2150 Z101,QSZ13 CM2150 Z102,X15 CM2350 X114B,X15 CM2350 X116B   FAQ Q:Why choose us? A:professional services We are proud of having rich and professional experiences in receiving the foreign customers for we have been doing this for more then 5 years and serviced over 100 customers from Mid-East,South African,Mid-Asia countries. Q:What about the MOQ and Delivery? A:We have low limit on MOQ,200pcs is avaible.For small trial orders,you can choose DHL,UPS,TNT,FedEx or EMS for delievery,or else,we can send goods to your warehouse in china for free.For bulk orders,the bestway for delivery is container shipping.Please contact our sales person for details. Q:How can i pay the money? A:1.USD 2.EURO 3.CNY 4.RUB 5.HKD 6.GBP 7.AUD 8.JPY 9.KRW 10.CAD.Other payment term can be discussed. Q:What range of products could you supply? A:We have our own factory,warehouse.Our main business is filters,fuel filter,oil filter,fuel water separator,hydraulic filter and so on.Mostly for trucks,engineering,agricultural machines.   Customer Service: We strive to provide 5-star customer service!  If the item you received is not the one you ordered,please take photos and contact us directly.  We will work out a solution and get back to you as soon as possible. Any problem with order or item, please contact us first instead of leaving us Negative feedback! Your understanding is highly appreciatedthank you!   About us Our company is a main manufacturer and exporter of filters to truck parts and mechanical parts and so on in China,specializing in the production,sale and development of many brands offilters for CAT,PERKINS,JOHNDEERE,CUMMINS,Benz,MAN,DAF,SCANIA,Volvo,Iveco,MACK, KOMATSU,HITACHI,ISUZU,Toyota,Volkswagen,Renault,etc.Or specific brands based on customers'needs. We have a variety of domestic and imported auto filters,filter mechanical engineering,shop clean filters,and dust filters.Our products are in compliance with the relevant technical standards of National Machine-Building Association and the State Administration of Quality Supervision and Inspection Center.   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 Wechat:+8618965520297  

Description Part Name: Belt Tensioner 5333481 3937555 Models: B Series C Series ISB QSB 3.9L 5.9L 8.3L   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.    To save the cost,pls send the item back without packing.     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   We are good at supplying spare parts for below brand Machine.  

  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: Genuine Cummins 6CT 8.3 Engine Belt Tensioner 3976831   Details Alternative and other replacement reference part numbers:  Cummins 3936213,3281583,3934821,3945527,Dayco 89481.  Description:  Cummins B & C Series Belt Tensioner. 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 Supply the Details photos and Questions Descrption. 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