The Enginetech ER690 is a 4-piece rocker arm set engineered as a stock replacement for 1958-1976 Ford, Mercury engine applications.
Important Notes
- Sold as a 4-pack. Confirm total quantity needed for your engine before ordering.
Specifications
| Brand | Enginetech |
| Part Number | ER690 |
| Product Type | Rocker Arm Set |
| Quantity per Pack | 4 |
| Country of Origin | United States |
| OEM / Aftermarket Cross References | Elgin:R-859, Elgin:R859, Melling:MR-859, Melling:MR859, Wolverine:RA5801, Clevite:311009, FEL-PRO:R-814, FEL-PRO:R814, Perfect Circle:2142034, SB International:180-1059, Ford:B8AZ6564C, Pioneer:R-690, Pioneer:R690, MAHLE:214-2034 |
Vehicle Fitment
- Years: 1958-1976
- Makes: Ford, Mercury
- Models: 300, Brougham, Caliente, Capri, Club, Colony Park, Comet, Commuter, Cougar, Country Cruiser, Country Sedan, Country Squire, Custom, Custom 300, Custom 500, Cyclone, Del Rio Wagon, F-100, F-150, F-250, F-350, Fairlane, GT40, Galaxie, Galaxie 500, and more
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.
