RPS V8 Distributor Cap and Rotor Kit for Mercruiser & Volvo Penta 5.0/5.7/6.2 — Flat‑Top Fit, Brass Terminals

RPS V8 distributor cap and rotor kit replaces worn ignition components on Mercruiser and Volvo Penta 5.0, 5.7 and 6.2 V8 engines, restoring reliable spark distribution for marine applications.

This kit is a direct-fit replacement designed for flat-top distributor caps used on 2001–present Mercruiser and compatible Volvo Penta gasoline V8 engines, including 350 MAG MPI, 5.0, 5.7 GXI and GI models. It swaps in for OEM part numbers 8M0061335, 8M0060495, 898253T29 and Volvo 3858975/3858977. The kit includes a new rotor and screws, brass terminal connections and reinforced metal inserts in the cap screw holes to reduce cracking when tightened.

Which engines and model years does this RPS kit fit?

This kit is built for flat-top distributor caps used on Mercruiser and certain Volvo Penta V8 gasoline engines. It fits 5.0, 5.7 and 6.2 L V8 engines from 2001 to present and common MPI/GXI/GI variants like the 350 MAG MPI.

• Compatible with Mercruiser 5.0, 5.7, 6.2 V8 engines (flat-top caps).
• Replaces Mercruiser part numbers 8M0061335, 8M0060495, 898253T29.
• Replaces Volvo Penta 3858975 and 3858977 caps/rotors.
• Works with MPI, GXI and GI ignition configurations where flat-top caps are used.

How does the kit improve durability compared with worn parts?

The cap features metal inserts at the screw holes to prevent cracking under torque, and the terminals use quality brass for reliable conductivity. New fasteners are included so you install components without reusing old, weakened screws.

• Metal inserts reinforce screw mounting points to reduce cap cracking.
• Brass contacts provide stable electrical connection and corrosion resistance.
• New screws and rotor included for a complete fresh installation.
• Designed to meet the fit and function of original equipment replacements.

What should I expect during installation and routine upkeep?

Installation is straightforward for anyone familiar with distributor servicing: remove the old cap and rotor, transfer or replace any mounting hardware, and torque the cap screws to spec. Inspect ignition wires and spark plug caps while the distributor is accessible to ensure overall system health.

• Swap old cap and rotor for the RPS kit—no special tools beyond basic hand tools.
• Follow OEM torque recommendations to avoid over-tightening the reinforced screw holes.
• Check rotor alignment and rotor-to-contact clearance before finishing installation.
• Periodically inspect brass terminals for corrosion and replace if excessively worn.

Will this kit affect engine performance or service intervals?

Replacing a worn cap and rotor restores consistent spark delivery and firing order integrity; this helps the ignition system operate as designed but is not a performance upgrade. Regular replacement as part of scheduled ignition maintenance helps prevent misfires and hard starting associated with aged distributor components.

• Designed as a like-for-like replacement to maintain factory ignition behavior.
• No alteration to timing or engine settings is required when installed correctly.
• Recommended interval follows manufacturer guidance or when symptoms like misfiring occur.
• Part of routine ignition service—inspect with plug/wire checks.

Who is this for: Boat owners, marine technicians and DIY mechanics running Mercruiser or compatible Volvo Penta V8 gasoline engines who need a reliable, OEM-style replacement for flat-top distributor caps. This RPS kit is ideal for anyone replacing brittle caps, worn rotors or corroded contacts and who wants a complete hardware-included solution for a clean, durable installation.