Marine Distributor Cap Kit For Select GM 4 Cylinder Engines With Delco EST Ignition, Brass Inserts, PBT PET Body, Anti Warpage Design, RFI Interference Shielding, Durable Marine Ignition System Upgrade

GM 4-Cylinder Distributor Cap Kit w/ Cap & Rotor for Marine
✔️ Brass inserts resist corrosion, warp-resistant body, RFI shield

This distributor cap kit is designed for select GM 4-cylinder MerCruiser engines with Delco EST ignition. It's built to withstand harsh saltwater conditions and protect onboard electronics while delivering reliable spark timing for marine applications.

✅ PBT PET body provides strength and warp resistance
✅ Solid brass inserts resist corrosion and electrical pitting
✅ RFI interference shielding protects onboard electronics
✅ OEM-equivalent design for MerCruiser GM engines
✅ Includes distributor cap and rotor for a complete upgrade

💡 What is a marine distributor cap kit used for in Delco EST ignition systems? This handy upgrade helps maintain ignition performance on saltwater boats.

- Improves spark reliability and timing for GM 4-cylinder marine engines - Uses brass inserts and warp-resistant body to resist corrosion - Shields electronics from RF interference in saltwater environments