Why Choose BGA?. Rocker Arm, engine timing. OEM References: FORD: 5004835, FORD: 5004836, FORD: 6062845, FORD: 6462251, FORD: 78HM6564AA, FORD: 78HM6594AA. Fitting Position Exhaust Side. ✔ Specialist in gaskets & engine parts ✔ Extensive vehicle coverage.