Rocker Cover Lower Cover

Description：High-quality rocker cover lower cover for diesel engine valve systems. Designed for oil containment, heat resistance, and valve train protection. Compatible with Cummins, Weichai, WP10, and other heavy-duty truck engines.

Product model：

Category ：Engine System

Update time：2025-07-08

Product Description

The rocker cover lower cover, also referred to as the lower valve cover, is a vital sealing and protection component located beneath the engine's rocker cover assembly. It plays a key role in shielding the valve train, preventing oil leaks, and ensuring consistent oil flow and containment within the cylinder head area.

This component is commonly used in diesel and gasoline engines across heavy-duty trucks, buses, and construction machinery. Our rocker cover lower covers are made from high-strength aluminum alloy or reinforced composite materials, designed to withstand engine heat, pressure, and oil exposure without deformation or cracking.

It ensures optimal valve train protection, supports clean oil circulation, and contributes to longer engine life by maintaining a sealed environment for the camshaft, rocker arms, and valves.

Key Features

Durable aluminum or composite material with high thermal resistance

Precision machined to ensure oil-tight sealing and perfect fit

Corrosion-resistant surface treatment

Compatible with multiple heavy-duty engine models

Supports OEM/ODM customization and bulk production

Easy installation with standard mounting bolts and gasket alignment

Technical Specifications

Parameter	Specification
Material	Aluminum alloy / Fiber-reinforced plastic
Application	Diesel engine rocker chamber sealing and protection
Operating Temperature	-30°C to +180°C
Function	Oil containment, valve train protection, heat insulation
Compatibility	WP10, WP12, D10, D12, Cummins, Weichai, Yuchai, etc.
Installation	Bolt-on with gasket or sealant
Quality Standard	ISO/TS 16949 certified production