Mercury – Quicksilver Engine Starter | Direct Drive 40MT Series | 12-Volt | 8M6007275

Overview

When your day depends on getting heavy equipment, a marine engine, or an agricultural workhorse running on the first try, you learn to appreciate parts that never skip a beat. That moment when you turn the key — hearing a strong, confident crank instead of a sluggish groan — sets the tone for everything that follows. The Quicksilver 8M6007275 starter is built for those moments. It’s steady, durable, and engineered to bring big engines to life with the kind of reliability that earns your trust over time. Whether you’re out on the water, in the field, or running industrial machinery, this starter is designed to keep your workday moving without hesitation.

Key Features

• Twelve-volt direct drive starter

• Clockwise rotation with an eleven-tooth 40MT Series gear design

• High-temperature epoxy armatures protect wiring from heat, moisture, and corrosion

• Heavy-duty needle bearings or copper bushings for enhanced durability

• Permanent magnet construction delivers high torque and smooth crank performance

• Marine SAE J1171 ignition protection certified

Engine & Boat Compatibility

• Ideal for agricultural, industrial, and marine engines

• Works with a wide range of Caterpillar engine models

• Replaces numerous Case and Caterpillar OEM starter numbers

• Common applications include:

  • Tug and workboats

  • Large diesel engines in tractors and combines

  • Construction machinery

  • Industrial generators and heavy equipment

• Suitable for both freshwater and saltwater environments

Performance & Practical Benefits

This starter is built for the engines that work the hardest — the ones that power long shifts, heavy loads, and tough conditions. The direct drive system provides a tight, steady crank that reliably turns over large diesel engines without hesitation. Even after long periods of downtime or cold-weather starts, you’ll feel how responsive and consistent the engagement is.

Internally, the 8M6007275 is designed for rugged environments. The epoxy-coated armatures secure and insulate wiring to protect against corrosion — an essential feature for marine and industrial use. Its bearings and bushings maintain smooth rotation even under high load and high vibration, keeping performance steady over years of service. Installation is made simple thanks to the OEM-aligned design, giving operators a clean, accurate fit without modification or guesswork.

During day-to-day use, the difference is unmistakable. Engines start faster, electrical strain is reduced, and your equipment performs more predictably. Whether you rely on your machine for your livelihood or your boat for long days on the water, that confidence matters.

Why Buy OEM

Starters may look similar from the outside, but internal engineering makes all the difference. Mercury Marine OEM parts are designed to meet the rigorous demands of marine, agricultural, and industrial applications. The 8M6007275 outperforms aftermarket alternatives in torque consistency, material strength, corrosion resistance, and long-term dependability. Using OEM ensures your equipment runs with fewer issues, less downtime, and longer service intervals. It’s the kind of practical decision seasoned operators make because they’ve seen how costly inferior parts can be over time.

FAQ

Q1: Which engines does the Quicksilver 8M6007275 starter fit?
It fits various Caterpillar engines and numerous agricultural, marine, and industrial systems that use 40MT Series starters.

Q2: What makes this better than aftermarket options?
Superior torque, corrosion-resistant internal components, tighter tolerances, and long-term reliability set it apart.

Q3: How can I confirm compatibility?
Match part number 8M6007275 with your equipment manual or cross-reference your current starter’s OEM numbers.

Q4: Can this be used in saltwater environments?
Yes — it is corrosion-resistant and certified for marine ignition protection standards.

Q5: Is installation straightforward?
Most operators find installation simple due to its precise OEM-style fit.