Description
Product Overview
Part Name: Intake & Exhaust Valve Spring
Part Number: 4936076
Vehicle Compatibility: Designed for Cummins ISL, L8.9 and QSL9 diesel engines used in medium- and heavy-duty commercial trucks produced between 2005–2024. Fits logistics vehicles, vocational trucks, construction machinery and generator applications using these 8.9L platforms.
Configuration: Manufactured from premium heat-treated spring steel with precision-ground ends and controlled spring tension. Engineered to maintain stable valve operation under high load, high pressure and extended operating cycles.
Function: Ensures proper valve seating, prevents valve float, maintains accurate valve timing and supports efficient combustion. Replaces worn springs that cause misfires, rough idle, power loss or valvetrain instability.
Technical Specifications
Type: Diesel engine valve spring
Material: Tempered alloy spring steel
Application: Fits Cummins ISL, L8.9 and QSL9 engines requiring valve spring 4936076
Cross-Reference: Matches OE Cummins spring rate, free height and load characteristics
Installation: Replace when experiencing weak compression, noisy valvetrain, misfiring or reduced power due to spring fatigue
Service Interval: Typically replaced during top-end rebuilds or every 500,000–750,000 km
Delivery & Availability
Stock Options: Available in warehouse stock
Delivery Time: 3–7 days internationally
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