Mercury – Distributor Cap Kit | MPI Ignition System | Composite Construction | 8M0061335

Overview

When you spend your weekends on the water, you can feel when your engine is running right. There’s a certain steadiness to it—a rhythm that settles in as you push through open channels or ease into the marina at sunset. Your ignition system is at the heart of that feeling, and the distributor cap plays a bigger role than most folks realize. The Mercury 8M0061335 Distributor Cap Kit gives you that quiet confidence every time you turn the key, keeping your engine firing clean and strong so you can focus on the day, not what’s happening under the hatch.

Key Features

• Replacement distributor cap kit designed for select MerCruiser MPI engines

• Built from a reinforced PBT and PET composite for strength and heat stability

• Solid brass terminals resist corrosion and electrical wear

• Engineered to limit radio frequency interference with onboard electronics

• High resistance to warpage, thermal cracking, and vibration-related stress

• Designed to match Mercury’s original fit and performance standards

Engine & Boat Compatibility

Compatible with the following MerCruiser engines equipped with ECM 555 (2001–2015):

• 5.0L MPI sterndrive and inboard engines

• 5.7L MPI sterndrive and inboard engines

• 6.2L MPI sterndrive and inboard engines

• Serial number range: 0M300000–2A455878

Common boats using these engines include:

• Bowriders

• Cabin cruisers

• Sport boats

• Family runabouts

• Wake and tow boats

Performance & Practical Benefits

A marine ignition system takes a beating—heat, moisture, vibration, long idle sessions, sudden throttle bursts. A reliable distributor cap is what keeps spark consistent through all of it. The 8M0061335 Distributor Cap Kit brings back that smooth, predictable ignition timing that makes your engine feel steady from idle to wide-open throttle.

You’ll notice the difference in everyday moments: easier starts after sitting overnight, smoother acceleration when you roll forward, and fewer interruptions in spark on choppy days. The composite body stays tight and stable even after repeated heat cycles, while the brass inserts deliver clean conduction without the pitting you get from lower-grade metals.

This kit is built for durability in real marine conditions. Salt spray, bilge humidity, and long running hours won’t shake it loose or eat it alive. Once installed, it’s one of those parts you forget about—because it simply works.

Why Buy OEM

Choosing a genuine Mercury Marine part isn’t about buying a name—it’s about protecting the engine you rely on.

With OEM, you get:

• Components engineered specifically for MPI ignition systems

• Longer service life compared to generic alternatives

• Proper alignment and fitment right out of the box

• Materials that resist marine corrosion and electrical interference

• Confidence that your ignition timing stays clean and true

It’s the kind of part seasoned boaters recommend because they’ve learned the hard way that ignition isn’t something you gamble on.

FAQ

Q1: Which engines does this distributor cap kit fit?
It fits MerCruiser 5.0L, 5.7L, and 6.2L MPI engines with ECM 555 from 2001–2015.

Q2: What sets this apart from aftermarket caps?
The composite body, brass terminals, and RFI-resistant design match Mercury’s exact ignition standards—aftermarket caps rarely do.

Q3: How do I know if this is the right cap for my engine?
Check your serial number and ECM type. If you’re within the listed range and running MPI with ECM 555, this is the correct part.

Q4: Can I use it in both freshwater and saltwater environments?
Yes. The materials are made to handle corrosion, humidity, and temperature swings in any marine setting.

Q5: Is installation simple?
Most boat owners with basic mechanical experience can install it in under an hour.