Description
Product Overview
Part Name: Rocker Lever Arm
Part Numbers: 4003914 / 3400974 / 3064600 / 3064601
Vehicle Compatibility: Suitable for Cummins M11, ISM11 and QSM11 diesel engines used in heavy-duty trucks manufactured between 1994–2024. Compatible with commercial vehicles across brands such as Freightliner, Kenworth, Peterbilt, Volvo, International and other platforms using these Cummins engine families.
Configuration: Precision-machined rocker arm designed with hardened contact surfaces, reinforced steel construction, balanced pivot geometry and OE-style fitment for accurate valve actuation and long-life engine performance.
Function: Transfers camshaft motion to intake and exhaust valves, ensuring precise valve timing, stable combustion, improved engine efficiency, smooth idle and reliable performance under heavy-duty operating loads.
Technical Specifications
Type: Diesel engine rocker lever arm
Material: Forged and heat-treated alloy steel with hardened wear points
Application: Fits Cummins M11, ISM11 and QSM11 engines using rocker arm references 4003914 / 3400974 / 3064600 / 3064601
Cross-Reference: Interchangeable with rocker arms matching identical pivot dimensions, valve contact geometry and mounting specifications across M11/ISM11/QSM11 engines
Installation: Direct-fit component; install when valve noise increases, misfires occur, valve lift decreases, or when rocker arm wear or cracking is identified
Service Interval: Replace during top-end engine overhauls or when visible wear, scoring, lubrication issues or excessive valve clearance is detected
Delivery & Availability
Stock Options: Rocker lever arms available in ready stock
Delivery Time: 3–7 days internationally
Payment & Security
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