C Series Engine Alternator Drive Idler Pulley 3921988 3393374

What is an idler pulley?

An idler pulley is a specific part of a vehicle’s belt system that helps regulate how the belts run from the crankshaft to generate movement in other parts and engine accessories. It is one of a set of pulleys that a belt rests on. These engine belts are often called "serpentine belts" when they run across various pulleys, and they often run the air conditioning compressor, power steering pump, and alternator of a vehicle. Manufacturers generally provide a belt diagram that includes pulleys, either on a sticker under the hood or in the driver’s manual.

In many cases, the idler pulley is the point that is adjusted to replace a belt, and pulley replacement often includes replacing one or more belts. Mechanics talk about tensioners, which help provide the right level of tension on the belts. Vehicle owners can often adjust the pulley with a screw to gain or lose tension, and they can also move the idler pulley to release tension so that the belt can slip over it. They can then turn the tensioner to keep the belt tight and ensure its correct operation.

Shiyan Renman Automobile Parts Co., Ltd. was established in Shiyan city, so called automobile city in China, in 2008.  We mainly supply diesel  engines and spare parts for various trucks, buses, pickup, SUV, MPV, VAN,  marine, construction machinery, such as A2300, ISF2.8/3.8, 4BT3.9, 6BT5.9, 6CT8.3, 6L8.9, QSB6.7, ISBe, ISDe, ISLe, ISM, QSC, QSL, QSM, M11, L10, N14, NT855, KTA19/38/50.

Q:Are you a manufacturer?

A: No, we are an engine parts trading compnay, a distributor of some manufacturers.

Q:What information should be provided to get a quotation?

A:To get an accurate quotation, please let us know the exact part name, quantity, quality level and trade terms like EXW, FOB and so on.  More details provided will help.

Q:How many days will samples be finished? And how about mass production?

A: For regular models, generally we have ready samples to be sent out at the earliest time.

As for mass production, it completely depends on customers’ order quantity.

Q:Do you inspect the finished products?

A: Yes,we must make sure the goods are 100% new and quality is 100% qualified.

Q:How do you ship the finished products?

A: By sea or by air, completely based on customers’ request and order quantity. 

Why choose us?

1.Various&Flexible supply ability
We have built solid relationships with numbers of strong manufacturers, such as Dongfeng Engine, Wuxi Holset Turbo, Bosch China, etc. So we can provide a various range of auto parts.

2.High quality and competitive price
Genuine parts are with very high quality, the quality of high copy parts are good enough, and common quality for common copy parts.
For high copy parts, it's really cost effective.

3.Quality assured
Generally the parts are tested before shipment, the quality can be assured unless problems happen during transportation.

How to contact us?

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