ISUZU 4HK1 6HK1 Engine Inlet Rocker Arm

Function and Features of Diesel Engine Rocker Arms

Function

The rocker arm is a critical component in the valve train of a diesel engine. Its primary functions include:

1. Transmitting Motion – It transfers the rotational movement from the camshaft (via pushrods or directly) to the valves, opening and closing them at precise timings.

2. Leverage Amplification – The rocker arm acts as a lever, converting the camshaft’s small lift into a larger valve displacement for efficient airflow.

3. Valve Timing Control – Ensures proper intake of air and exhaust of combustion gases by synchronizing valve operation with piston movement.

Key Features

1. Durable Material – Typically made from hardened steel, forged alloys, or cast iron to withstand high stress and wear in diesel engines.

2. Adjustable Design – Many rocker arms include adjustment screws or hydraulic lash adjusters to maintain proper valve clearance (valve lash).

3. Low-Friction Design – Some feature roller tips or bushings to reduce friction and improve efficiency.

4. Stiffness & Lightweight – Optimized for rigidity to prevent flexing while minimizing weight to reduce inertia.

5. Compatibility with High Compression – Diesel engines operate under higher compression than gasoline engines, requiring stronger rocker arms.

Advantages in Diesel Engines

• Reliability – Built to endure the high torque and combustion pressures of diesel cycles.

• Precision – Ensures accurate valve timing for optimal combustion efficiency and emissions control.

• Serviceability – Adjustable designs allow for maintenance without removing the camshaft.

HOW TO CONTACT US

Our Service

1. Supply ISUZU genuine parts , ISUZU Bvp parts , OEM parts , high cost performance China manufacture parts .

2. General agent of ORIGIN PARD in China.

3. Thirty years of retail and wholesale experience . The sales group with average of five years experience , can answer any professional question . Equipped with a professional quality inspection team.

4. Running seven stores , manage in commercial vehicle and industrial engine parts.

5. Can offer competitive purchase price to our client , cause we attain developed distribution channel over the world.

FAQ

1.Q:What is your terms of payment?

A:T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

2.Q:Are you manufacturer or trading company?

A: We are both factory and trading company , we combination for more than 10 years. We have invested in 3 factories.

3.Q: How about the delivery time of the goods?

A: For testing sample, which it depends on the storage.

For bulk production, the delivery time is about 15-30 days based on order situation.

4.Q.:Can you produce according to the samples?

A: Clients’ sample is welcome. We are able to produce the specific products according to your sample.
If you do not find the product you need, tell us detailed information, we have the ability to design and manufacture as requested.

5.Q: Can I get a lower price if I order large quantities?

A: Yes, cheaper prices with more bigger size orders.