JPR-VP5090G Aftermarket Volvo Penta 4.3/5.0 GL-GS/Gi Seawater Pump 21255090 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket JMP Volvo Penta V-belt gasoline seawater pump with short hose - Replacement Part Number: JPR-VP5090G

A two-groove V-belt seawater pump for Volvo Penta 4.3L, 5.0L and 5.7L GL/GS/Gi petrol engines. It replaces Volvo Penta 21255090 and related 3812520 and uses the short-hose connection layout.

⚙️ Key Features

• Bronze V-belt-driven pump body

• Two-groove drive pulley configuration

• Short-hose connection layout

• JMP 7136K / Johnson 09-812B impeller family

• Direct replacement for Volvo Penta 21255090

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Volvo Penta 21255090 → Later related replacement for 3812520

OEM / Related Numbers:

• JPR-VP5090G

• Volvo Penta 21255090

• Volvo Penta 3812520

• Impeller: JMP 7136K / Johnson 09-812B

• Related Volvo Penta impellers: 22307636, 21212794 and 21213664

Aftermarket / Verified Equivalents:

• JMP Marine: JPR-VP5090G

• DJ Pump: DJ-V55090

• RCMA: WV-7011

🚤 Compatibility

Commonly used on:

• Flexible-impeller raw-water cooling systems

Typically suits:

• Engine models:

• Volvo Penta 4.3GL, 5.0GL and 5.7GL

• Volvo Penta 4.3GS, 5.0GS and 5.7GS

• Volvo Penta 4.3Gi and 5.0Gi

• HP Range: Engine-rating specific

• Engine Type: Volvo Penta GM-based petrol V6/V8 with V-belt pump drive

• Year Range: Model- and serial-specific; confirm OEM pump 21255090

• Pulley: Two-groove V-belt

• Hose Layout: Short hose

• Impeller Reference: JMP 7136K / Johnson 09-812B

🔌 Function

The seawater pump draws raw water through the intake and circulates it through the engine, heat exchanger, oil cooler, aftercooler and wet-exhaust circuit as applicable. Its flexible impeller must maintain adequate flow from idle through full load while the shaft, bearings and mechanical seal keep the drive and water sections correctly supported and separated.

Common signs of failure:

• Engine temperature rises under load or at higher RPM

• Reduced or intermittent water discharge from the exhaust

• Missing, cracked, swollen or permanently set impeller vanes

• Seawater leakage or salt tracks from the shaft seal or weep area

• Bearing noise, pulley or gear wobble, or excessive shaft movement

• Scored cover plate, worn cam or damaged pump housing reduces suction

• Internal corrosion, air leakage or blocked inlet passages cause loss of prime

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging