21323043 Aftermarket Volvo Penta Starter Motor | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Volvo Penta MD2040 & D2-Series Starter Motor - Replaces Part Number: 21323043

New aftermarket starter replacing Volvo Penta 21323043 for MD2040 and larger D2-series marine diesels. It is a 12-volt, approximately 2.0kW clockwise two-bolt starter with a 9-tooth pinion.

⚙️ Key Features

• 12-volt electrical system

• Approximately 2.0kW rated output

• Clockwise rotation viewed from the drive end

• 9-tooth pinion

• Two-bolt 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 21323043

• 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:

• 21323043 → Supersedes/cross-references 3583555, 3581727, 3801351 and 3803929

OEM / Related Numbers:

• 21323043

• 3583555

• 3581727

• 3801351

• 3803929

• Perkins 185086600

• Caterpillar 163-3361

• Bosch 0-001-109-035

Aftermarket / Verified Equivalents:

• Recmar: REC21323043

• WAI: 18949N

• Aftermarket Bosch 0-001-109-035 family

🚤 Compatibility

Commonly used on:

• Volvo Penta compact marine diesel starting systems

Typically suits:

• Engine / Generator models:

• MD2040A/B/C/D

• D2-55A/B/C

• D2-60F

• D2-75A/B/C/F

• HP / Output Range: Approximately 39HP - 75HP

• Year Range: Principally 1994 onward; engine-serial dependent

• Starter Identification: Confirm 12V, 9-tooth pinion and two-bolt mounting; do not confuse with smaller 21302969.

🔌 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