This Valve Spring Retainer (Part No.: 4976168F) is a critical structural accessory exclusively designed for ISF2.8 and ISF3.8 engines—the core power units of Foton Cummins light-duty trucks and industrial equipment. As an essential component of the engine valve train, it securely locks the valve spring in place, ensuring stable valve operation, reducing vibration, and preventing spring displacement during high-speed engine operation . Its precision design directly contributes to the engine’s valve timing accuracy and overall performance stability.
Core Specifications
Key Features
Precise compatibility with ISF2.8/ISF3.8 engines, seamlessly fitting the valve train assembly without additional modifications. Enables quick and hassle-free replacement, minimizing equipment downtime.
High-strength alloy construction offers exceptional durability, wear resistance, and impact resistance—capable of withstanding the high-temperature and high-vibration environment of the engine valve system .
Precision-machined surface and strict dimensional control ensure tight connection with the valve spring and valve stem, maintaining consistent spring preload and valve movement accuracy.
Compact and lightweight design (2x1x1cm, 0.008KG) adheres to the engine’s structural constraints, while the robust material ensures long service life and low failure rate in heavy-duty operations.
Applicable Scope
Specially customized for ISF2.8 and ISF3.8 engines used in Foton Cummins light-duty trucks (Aumark, Ollin), vans, and small construction machinery . It is an ideal replacement part for engine valve system maintenance, repair, and overhaul, effectively restoring the valve train’s structural integrity and operational stability.
We are committed to providing high-quality engine structural accessories with precise matching and reliable performance, offering a cost-effective solution to keep your Foton Cummins equipment’s valve system running smoothly and efficiently.
