The Enginetech ER325 is a rocker arm kit engineered as a stock replacement for 2000-2014 Chevrolet, GMC, Oldsmobile engine applications.
Important Notes
- Direct OEM-specification replacement rocker arm.
Specifications
| Brand | Enginetech |
| Part Number | ER325 |
| Product Type | Rocker Arm Kit |
| Quantity per Pack | 1 |
| Country of Origin | China |
| OEM / Aftermarket Cross References | Melling:MR-903, General Motors:12555580, General Motors:12599650, Pioneer:R903 |
Vehicle Fitment
- Years: 2000-2014
- Makes: Chevrolet, GMC, Oldsmobile
- Models: Astro, Blazer, Bravada, Express 1500, Express 2500, Jimmy, S10, Safari, Savana 1500, Savana 2500, Sierra 1500, Sierra 1500 Classic, Silverado 1500, Silverado 1500 Classic, Sonoma
Rocker arms are a critical valvetrain component, transferring motion from the camshaft or pushrod to the valve stem to open the intake and exhaust valves in precise time with crankshaft rotation. Wear, pitting, or pivot failure in even a single rocker arm disrupts valve timing and lift, causing lost compression, misfires, and accelerated guide and seat wear. Replacing rocker arms during a top-end or full engine rebuild - alongside pushrods, retainers, valve springs, and valve seals - restores correct valvetrain geometry and avoids the compounding tolerance stack that shortens a fresh rebuild's service life.
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm, including lead and nickel.
