Description The Valve Stem Seal 3948578 is an essential component in the engine valve system. It is responsible for preventing the oil from entering the combustion chamber through the valve stem. This seal ensures the optimal functioning of the engine by maintaining an adequate oil level, reducing pollution, and preventing the formation of deposits on the valve guides. The Valve Stem Seal 3948578 provides a reliable seal while also reducing the friction between the valve stem and guide. This, in turn, increases the engine's performance, decreases wear and tear, and prolongs the engine's lifespan. It plays a vital role in the overall health and efficiency of the engine, making it a crucial part that should be well-maintained for the best results.   Part Name: valve stem seal 3948578 Engine: 4BT,6BT,6CT,ISB,ISC,ISM,ISL,QSB,QSM,NT855,K19,K38,M11     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/Wechat:+8618965520297     We are good at supplying spare parts for below brand Machine.    

Description Part Name: Gear Housing Gasket 3944293 Engine: ISC QSC ISL QSL   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.

Description Part Name: Turbocharger Gasket 3901356 Engine: 4BT 3.9,6BT 5.9   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.

Description Part Name: Diesel Engine Isle Fuel Pump CCR1600 5311171 3973228 Application:fit for Cummins ISLe Diesel Engine Details Photos   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.

Description Part Name: Electronic Fuel Transfer Pump 4937766 5260634 Application:fit for Cummins ISLe Diesel Engine     Details Photos       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.

Description Part Name: Diesel Injection Pump 3075537 Application: KTA50 K50 QSK50 KTA38 Engine Details Photos   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.

  CHINA EVERLASTING PARTS CO., LIMITED · Professional High-Quality Engine Parts & Filter Manufacturer Cummins Engine Piston Ring Set 4089811 · 3801755 · 3260571 · 3803471 SKU: CEP-PR-NTA855-SET · For Cummins NTA855 Engine This complete Cummins Engine Piston Ring set is manufactured for the Cummins NTA855 engine platform. It replaces OEM part numbers 4089811, 3801755, 3260571, 3803471 and delivers reliable compression sealing, efficient oil control, and long service life for heavy-duty diesel engine rebuilds. Designed for professional engine rebuilders, fleet maintenance teams, wholesalers, retailers, and aftermarket parts shops, this piston ring set offers factory-direct pricing, verified fitment, and flexible OEM/ODM packaging. Key search terms: Cummins Engine Parts · Best Piston Ring · Piston Ring Cross Reference Request Wholesale Quote Product Overview: Cummins Engine Piston Ring Set The 4089811 3801755 3260571 3803471 Piston Ring set is a precision-engineered replacement pack for selected Cummins Engine Parts. It is manufactured with high-grade alloy steel and designed to match the thermal expansion, hardness, and sealing requirements of Cummins diesel engines. Each set is checked against original equipment dimensions and is suitable for overhaul, repair, and maintenance operations. Product Specifications Parameter Details Part Name Piston Ring Set Model Number 4089811 · 3801755 · 3260571 · 3803471 Engine Model Cummins NTA855 Service OEM & ODM Payment Terms T/T, Western Union, MoneyGram, Cash, ESCROW Deposit / Balance 30% deposit to start production; balance before shipment Shipment Worldwide except APO/FPO; air freight or express for urgent and small orders Packaging Neutral box, custom label, or private brand packaging OEM / ODM Supply for B2B Buyers We support wholesalers, retailers, aftermarket service providers, and engine parts shops with flexible packaging and labeling. Request custom boxes, part number labels, or neutral packaging for private-brand sales. Each batch can be matched to your target market and import requirements. Ask for batch inspection data, product photos, and material details before mass order. Piston Ring Cross Reference for Cummins Engine Parts Need to verify fitment? The table below helps you confirm compatibility. If you have an old part number or an engine serial number, send it to our sales team for a professional piston ring cross reference. Reference Number Engine Family Part Type 4089811 Cummins NTA855 Piston Ring Set 3801755 Cummins NTA855 Piston Ring Set 3260571 Cummins NTA855 Piston Ring Set 3803471 Cummins NTA855 Piston Ring Set Piston Ring Replacement Cost and Buying Considerations The total piston ring replacement cost depends on labor, engine condition, cylinder wear, and the selected ring kit. Buying the complete 4089811 set from a factory supplier can lower the parts portion of the total repair cost. For B2B buyers, the best piston ring is not only a low price; it is the ring set that fits correctly, seals well, and creates repeat business. For wholesalers and engine rebuilders, ordering by full set and using a confirmed piston ring cross reference reduces cost per job and inventory risk. Request batch pricing for 20, 50, or 100 sets. FABE Product Analysis Features OEM reference numbers: 4089811, 3801755, 3260571, 3803471 Compatible engine platform: Cummins NTA855 Complete piston ring set: compression rings, second ring, and oil control ring Precision-machined ring faces for consistent cylinder wall contact Heat-resistant material composition for heavy-duty diesel operation Available with neutral, private label, or customized branding Advantages Lowers piston ring replacement cost for engine rebuilders due to factory-direct pricing Stable ring tension improves cylinder sealing and reduces blow-by Strong oil control lowers oil consumption and carbon deposit buildup Verified piston ring cross reference reduces wrong-part ordering errors Fast global shipping supports urgent repair schedules Benefits Helps B2B buyers keep inventory turn rates high with a reliable Best Piston Ring option Reduces end-user downtime by providing consistent engine compression and longer rebuild intervals Improves warranty confidence for installers and aftermarket service shops Increases profit potential for wholesalers and retailers through direct OEM/ODM supply Evidence Our production system follows strict dimensional inspection and material verification processes. Batch inspection reports, packaging photos, and part verification are available before shipment. The experience of global buyers confirms that this Cummins Engine Piston Ring set provides dependable performance in demanding engine rebuild applications. Below are verified customer reviews from professional parts buyers and engine rebuild shops. Customer Testimonials ★★★★★ Daniel R. — Fleet Parts Distributor, Texas, USA “We ordered 60 sets for NTA855 rebuilds. The cross reference was accurate, and the piston ring price allowed us to hit our target margin. Our customers reported better oil control after installation.” ★★★★★ Marco T. — Engine Rebuild Shop Owner, Australia “The 4089811 and 3801755 piston ring sets fit perfectly. Cylinder leak-down improved after the rebuild, and oil consumption dropped. This is the best piston ring set we have used for NTA855 work.” ★★★★★ Sofia L. — Wholesale Parts Buyer, Poland “The China Everlasting Parts team confirmed the Cummins Engine Parts fitment before shipment. Packaging was clean, delivery was fast, and the OEM/ODM service helped us build our own brand. We reorder monthly.” Frequently Asked Questions 1. What engine does the 4089811 piston ring set fit? This Cummins Engine Piston Ring set fits the Cummins NTA855 engine. It is cross-referenced with part numbers 3801755, 3260571, and 3803471. 2. What is the typical piston ring replacement cost? The replacement cost depends on labor, engine condition, cylinder wear, and the selected ring kit. Buying the complete 4089811 set from a factory supplier can lower the parts portion of the total repair cost. 3. Do you provide a piston ring cross reference service? Yes. Send the old part number, engine serial number, or cylinder bore size, and our team will confirm the correct set before payment. 4. What are the payment and shipping terms? We accept T/T, Western Union, MoneyGram, cash, and major credit cards via ESCROW. We require a 30% deposit to start preparation and the balance before shipment. We ship worldwide except APO/FPO. Urgent and small orders can be sent by express. 5. Can you provide OEM or ODM service? Yes. We offer neutral packaging, custom labels, and private-brand packaging for qualified bulk orders. Contact & Wholesale Inquiry CHINA EVERLASTING PARTS CO., LIMITEDWhatsApp: +86 18965520297WeChat: +86 18965520297Email: Sales@parts-machining.com For wholesale pricing, cross reference support, or OEM/ODM packaging, contact us today.

Description Model Number: 4934063 Part Name: Valve Guides Model Number:  ISC, QSC, ISL and QSL       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 Model Number: 4933120 Part Name: Piston Model Number: 6CT QSC8.3 Cylinder No:6 Cylinders Dia.:114mm Height:120.3mm Piston pin size:45mm*91mm   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 Model Number: 4089644 Part Name: Piston Ring Set Engine model: ISC QSL 8.9L C series      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 Model Number: 3950549 Part Name: Piston Pin Engine model: QSL, ISL    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 Model Number: 3944344 3800328 3948095 Part Name: Engine Cylinder Liner Engine model: 6c 6ct 6cta   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