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Mr. Perry Wu International Sales Director
Cummins Engine Idler Pulley 4991240 / 5334567 | Heavy Duty Belt Idler Pulley
The 4991240 / 5334567 idler pulley is an important component of the engine accessory drive system for Cummins diesel engines.
Its main function is to guide and support the serpentine belt while maintaining smooth belt movement during engine operation. A properly functioning idler pulley helps reduce belt vibration, prevent abnormal belt wear, and improve the stability of the accessory drive system.
This idler pulley is widely used in heavy-duty trucks, commercial vehicles, and industrial diesel engine applications. Reliable pulley performance helps ensure stable operation of components such as the alternator, water pump, and air conditioning compressor.
Its main function is to guide and support the serpentine belt while maintaining smooth belt movement during engine operation. A properly functioning idler pulley helps reduce belt vibration, prevent abnormal belt wear, and improve the stability of the accessory drive system.
This idler pulley is widely used in heavy-duty trucks, commercial vehicles, and industrial diesel engine applications. Reliable pulley performance helps ensure stable operation of components such as the alternator, water pump, and air conditioning compressor.
Applications
● Cummins ISF diesel engines
● Cummins ISBe engine applications
● Cummins QSB / ISDe series applications
● Heavy-duty trucks and buses
● Construction machinery and industrial equipment
● Cummins ISBe engine applications
● Cummins QSB / ISDe series applications
● Heavy-duty trucks and buses
● Construction machinery and industrial equipment
Product Advantages
● Smooth Belt Guidance
Designed to maintain proper belt alignment and stable belt movement during engine operation, helping reduce belt slippage and uneven wear.
● Reduces Vibration and Noise
Helps minimize belt vibration, squeaking, and abnormal operating noise for smoother accessory drive system performance.
● Durable Bearing Structure
Equipped with a high-quality integrated bearing assembly for stable rotation, reduced friction, and long service life under heavy-duty conditions.
● Improves Accessory Drive Stability
Supports reliable operation of belt-driven components such as the alternator, water pump, and air conditioning compressor.
● OEM Standard
Manufactured to meet original equipment specifications for direct replacement.
Technical Specifications
|
Item |
Specification |
|
Item Name |
Idler Pulley |
|
Part Number |
4991240 / 5334567 |
|
Application |
Cummins Diesel Engine |
|
Suitable Engine |
ISF / ISBe / QSB / ISDe applications |
|
Type |
Engine Belt Idler Pulley |
|
Material |
Metal Pulley Assembly |
|
Bearing Type |
Integrated Bearing Structure |
|
Condition |
New |
|
Quality |
OEM Quality Replacement |
|
Packaging |
Original Packing / Neutral Packing |
|
Warranty |
6 Months |
|
Place of Origin |
China |
Function
The idler pulley is used to guide and support the serpentine belt in the engine accessory drive system.
It helps maintain proper belt routing and stable belt movement between pulleys and driven components. During engine operation, the idler pulley reduces belt vibration and helps maintain consistent belt contact with engine accessories.
A properly functioning idler pulley contributes to smoother engine operation, reduced belt wear, lower operating noise, and improved reliability of the accessory drive system.
In heavy-duty diesel engines, the idler pulley is an important component for maintaining stable performance of the belt-driven system.
It helps maintain proper belt routing and stable belt movement between pulleys and driven components. During engine operation, the idler pulley reduces belt vibration and helps maintain consistent belt contact with engine accessories.
A properly functioning idler pulley contributes to smoother engine operation, reduced belt wear, lower operating noise, and improved reliability of the accessory drive system.
In heavy-duty diesel engines, the idler pulley is an important component for maintaining stable performance of the belt-driven system.
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.