185086610 Aftermarket Perkins Starter Motor 185086620, 21302969 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Perkins 102/103/403-Series Starter Motor - Replaces Part Number: 185086610

New aftermarket starter replacing Perkins 185086610 and 185086620. It is a compact 12-volt clockwise, 9-tooth two-bolt starter for Perkins 100- and 400-series small diesel engines.

⚙️ Key Features

• 12-volt electrical system

• Approximately 1.2-1.4kW output depending manufacturer

• Clockwise rotation viewed from the drive end

• 9-tooth pinion

• Two-bolt compact gear-reduction construction

• Complete new starter motor with integrated solenoid

• Marine or engine-grade corrosion-resistant construction

• Direct replacement only after voltage, rotation, tooth count and mounting pattern are confirmed

🧰 Kit / Assembly Contents

• 1 × Complete starter motor assembly - P/N 185086610

• 1 × Integrated starter solenoid and shift mechanism

• 1 × Installed pinion gear and overrunning clutch/Bendix assembly

• 1 × Installed armature, field-magnet/winding, brush holder and drive housing

• Mounting bolts, electrical cables and external relays are transferred or renewed separately unless supplied

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• U5MK8259 → Current Perkins replacement for 185086610 and 185086620

OEM / Related Numbers:

• 185086610

• 185086620

• 18508661

• 18508662

• 185086321

• U85086711

• U5MK8259

• Bosch 0001107078

• Leece-Neville 20513015

Aftermarket / Verified Equivalents:

• Lester/WAI: 18948 family

• Aftermarket Bosch 0001107078 starter

• Recmar-compatible Perkins starter

🚤 Compatibility

Commonly used on:

• Perkins compact industrial and generator diesel starting systems

Typically suits:

• Engine / Generator models:

• Perkins 102-05

• Perkins 103-07 and 103-10

• Perkins 403A-11, 403C-11, 403D-11 and 403F-11

• HP / Output Range: Engine-rating dependent

• Year Range: Engine build-list dependent

• Starter Identification: Corrected cross-reference: 21302969 is a separate Volvo Penta MD2010/D1/D2 starter and is not the direct replacement for this Perkins unit.

🔌 Function

The starter motor converts battery electrical energy into high-torque mechanical rotation to crank the engine. When the start circuit energises the solenoid, the pinion moves into the flywheel ring gear and the motor turns the crankshaft until the engine starts. The overrunning clutch then protects the starter as engine speed rises.

Common signs of failure / incorrect starter fitment:

• No-crank condition even though the battery and start-control circuit test correctly

• Solenoid clicks but the starter motor does not rotate

• Starter turns slowly, draws excessive current or overheats the battery cables

• Pinion spins without engaging the flywheel ring gear

• Grinding, clashing or repeated pinion kick-out during cranking

• Intermittent cranking caused by worn brushes, solenoid contacts or heat soak

• Corrosion, water intrusion, burnt windings or excessive shaft/bearing play

📦 Condition

• New aftermarket replacement starter motor

• Brand new

• Supplied in original or equivalent packaging