Cummins QSL9 Lower Gasket Set 4089759 | Diesel Engine Lower Repair Gasket Kit
The Cummins 4089759 Lower Gasket Set is designed for the lower section repair and overhaul of Cummins diesel engines including QSL9, ISL, ISC, and QSC series.
The kit contains multiple sealing components used in the lower engine assembly, helping ensure proper sealing between engine parts during maintenance and rebuilding procedures.
Manufactured according to OEM specifications, the gasket set offers reliable sealing performance and stable durability under heavy-duty diesel engine operating conditions.
It is widely used in trucks, buses, construction machinery, generators, and industrial equipment.
The kit contains multiple sealing components used in the lower engine assembly, helping ensure proper sealing between engine parts during maintenance and rebuilding procedures.
Manufactured according to OEM specifications, the gasket set offers reliable sealing performance and stable durability under heavy-duty diesel engine operating conditions.
It is widely used in trucks, buses, construction machinery, generators, and industrial equipment.


Applications
● Cummins QSL9 diesel engines
● Cummins ISL / ISC / QSC engines
● Heavy-duty trucks
● Buses and commercial vehicles
● Construction machinery
● Generator sets
● Engine overhaul and maintenance projects
● Cummins ISL / ISC / QSC engines
● Heavy-duty trucks
● Buses and commercial vehicles
● Construction machinery
● Generator sets
● Engine overhaul and maintenance projects
Product Advantages
● Complete Lower Repair Solution
Includes multiple commonly used lower engine sealing components for maintenance and overhaul work.
● Reliable Oil Leakage Prevention
Helps maintain proper sealing between engine mating surfaces and reduces oil leakage risk.
● Durable Material Structure
Made from quality gasket materials with good resistance to heat, pressure, and engine vibration.
● Suitable for Heavy-Duty Engines
Widely applied in commercial diesel engines operating under long-hour and high-load conditions.
● OEM Standard
Manufactured to meet original equipment specifications for direct replacement.
Technical Specifications
|
Item |
Specification |
|
Item Name |
Lower Gasket Set |
|
Part Number |
4089759 |
|
Application |
Cummins Diesel Engine |
|
Engine Model |
QSL9 / ISL / ISC / QSC series applications |
|
Type |
Lower Engine Gasket Repair Kit |
|
Material |
Composite Gasket Material / Rubber / Metal |
|
Installation Position |
Lower Engine Section |
|
Function |
Engine Oil & Lower Assembly Sealing |
|
Condition |
New |
|
Quality |
OEM Quality Replacement |
|
Packaging |
Neutral Packing / Export Carton |
|
Warranty |
6 Months |
|
Place of Origin |
China |
Function
The lower gasket set is mainly used to seal the connection surfaces of the lower engine assembly.
It helps prevent leakage of engine oil and maintains stable lubrication inside the engine system during operation.
During engine overhaul or repair, replacing worn gaskets and seals helps restore sealing reliability and supports normal engine operation after reassembly.
It helps prevent leakage of engine oil and maintains stable lubrication inside the engine system during operation.
During engine overhaul or repair, replacing worn gaskets and seals helps restore sealing reliability and supports normal engine operation after reassembly.
Packaging & Delivery
● Standard export carton or customized packaging
● Delivery time: 3–10 days
● Shipping: Sea / Air / Express
● Payment: T/T, L/C, Western Union
● Delivery time: 3–10 days
● Shipping: Sea / Air / Express
● Payment: T/T, L/C, Western Union
FAQ
Q1: What is your terms of packing?
A: Generally, we pack you goods use factory packing box or neutral boxes.
Q2: What is your terms of payment?
A: By TT. We'll show you the photos of the products and packages before you pay the balance.
Q3: How about your delivery time?
A: Generally, it will take 3 to 10 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q4: How do you make a price offer and how long is its validity?
A: We usually quote within 24 hours by email after we get your inquiry . If you are very urgent to get the price,please call us or tell us in your email so that we will regard your inquiry priority. The price valid with 30 days.
Q5: What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q6: Do you accept third party inspection?
A: Yes, we do.
Q7: Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.
Q8: How do you make our business long-term and good relationship?
A: 1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them.
Q9: How to guarantee your after-sales service?
A: 1. Strict inspection during production;
2. Strictly check the products before shipment to ensure our packaging in good condition;
3. Track and receive feedback from customer regularly.
A: Generally, we pack you goods use factory packing box or neutral boxes.
Q2: What is your terms of payment?
A: By TT. We'll show you the photos of the products and packages before you pay the balance.
Q3: How about your delivery time?
A: Generally, it will take 3 to 10 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q4: How do you make a price offer and how long is its validity?
A: We usually quote within 24 hours by email after we get your inquiry . If you are very urgent to get the price,please call us or tell us in your email so that we will regard your inquiry priority. The price valid with 30 days.
Q5: What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q6: Do you accept third party inspection?
A: Yes, we do.
Q7: Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.
Q8: How do you make our business long-term and good relationship?
A: 1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them.
Q9: How to guarantee your after-sales service?
A: 1. Strict inspection during production;
2. Strictly check the products before shipment to ensure our packaging in good condition;
3. Track and receive feedback from customer regularly.

Sinotruk Parts
Shacman Parts
FAW Parts
Dongfeng Parts
Foton Parts
Chenglong Parts
Golden Dragon Bus Parts
King Long Parts
Yutong Parts
Higer Parts
Zhongtong Parts
Ankai Parts





Mr. Perry Wu International Sales Director