AN 6687-ST691 Aftermarket Kohler 28-40 EFKOZD/45-65 EFOZDJ Seawater Pump AN 7416, ED0065845590 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Ancor Kohler generator seawater pump - New-Type Replacement Part Number: AN 7416 / ST891

A newer-type seawater pump for Kohler 28-40 EFKOZD and 45-65 EFOZDJ marine generator sets. It replaces the older Ancor 6687-ST691 assembly and cross-references to Lombardini/Kohler ED0065845590. The replacement uses the new-type repair kit AN7433 rather than the old AN2499 kit.

⚙️ Key Features

• Bronze generator seawater pump

• New-type replacement for Ancor 6687-ST691

• Uses impeller AN2039 / Johnson 09-1028B

• New-type repair kit AN7433

• Direct replacement when the original mounting and drive match

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• AN 7416 / ST891 → Supersedes Ancor 6687-ST691

• Kohler ED0065845710-S → Later related service reference for ED0065845590 on specified generator sets

OEM / Related Numbers:

• Ancor 6687-ST691

• Ancor AN 7416

• Ancor ST891

• Kohler/Lombardini ED0065845590

• Kohler ED0065845710-S

• JMP equivalent: JPR-KL25UP

• Impeller: Ancor AN2039 / Johnson 09-1028B / JMP 7400-01

• Old-type repair kit: Ancor AN2499

• New-type repair kit: Ancor AN7433

• New-type oil seal: Ancor 17405

Aftermarket / Verified Equivalents:

• Ancor: AN 7416 / ST891

• JMP Marine: JPR-KL25UP

Important Fitment Notes:

• Use repair kit AN7433 for the new-type AN7416/ST891 pump; AN2499 is for the superseded old-style pump.

🚤 Compatibility

Commonly used on:

• Flexible-impeller raw-water cooling systems

Typically suits:

• Engine models:

• Kohler 28 EFKOZD through 40 EFKOZD generator families

• Kohler 45 EFOZDJ through 65 EFOZDJ generator families

• HP Range: Generator-engine rating specific

• Engine Type: Kohler/Lombardini marine diesel generator engine

• Year Range: Model- and specification-number specific; confirm OEM pump ED0065845590

• Seawater Connection Thread: Approximately 1 in BSP / 11 TPI

• Impeller Reference: AN2039 / Johnson 09-1028B / JMP 7400-01

• Weight of JMP Equivalent: Approximately 4.5kg

🔌 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