21212800 Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine crankshaft-mounted flexible-impeller seawater pump for later Volvo Penta 8.1-litre petrol marine engines and IPS packages.

🚤 Compatibility

Full model list at the end of this description.

⚙️ Key Features

• Current replacement for pump 3812518
• 8.1L V8 crankshaft-mounted design
• 1-1/4 inch inlet and 1 inch outlet configuration
• Verified Johnson, JMP and Albinus replacements
• Uses the later support-wire and grommet arrangement

🔌 Function

The pump supplies raw water to the 8.1L engine cooling, cooler and wet-exhaust circuits.

⚠️ Common Signs of Failure

• Low exhaust-water discharge
• Impeller damage
• Shaft-seal leakage
• Bearing or shaft noise
• Corroded housing
• Loose support wire or grommet

🛠️ Service Notes

• Establish why the old pump failed before the new one goes on — debris, a blocked strainer, a starved supply or a dry run will take out the replacement just as quickly
• Fit new gaskets, O-rings and seals on the pump's joint faces and drive, with the faces clean, and use only the sealant the workshop manual for your engine specifies
• Check the drive and the shaft it runs on — coupling, gear, key, belt or drive dog — while access is good, and renew anything doubtful
• Prime or fill the pump as the manual for your engine directs, bleed the system afterwards, and confirm it is actually delivering before the boat leaves
• Tighten mounting and cover fasteners evenly to the manual's figures; pump housings distort easily, and a distorted housing either leaks or binds

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21212800 → Supersedes 3812518

OEM / Related Numbers

• 3812518 earlier number superseded by this part
• 22307636 - Impeller references by pump revision
• 21212794 - Impeller references by pump revision
• 21213664 - Impeller references by pump revision

Other-Brand OEM Numbers

• Johnson Pump 10-13470-03

Aftermarket / Verified Equivalents

• JMP 7136K - Related impeller-kit reference; confirm pump revision
• JMP Marine: JPR-VP2800G
• Albinus: 05-01-044

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 8.1GiC-J, 8.1GiC-JF, 8.1GiCE-JF, 8.1GiCE-J, 8.1GiCE-M, 8.1GiCE-P, 8.1GiC-Q, 8.1GiCE-Q, 8.1GiE-JF, 8.1GiE-J, 8.1GiE-KF, 8.1GiE-K, 8.1GiE-M, 8.1GiE-MF, 8.1GiE-P, 8.1Gi-G, 8.1Gi-GF, 8.1Gi-H, 8.1Gi-HF, 8.1GiI-G, 8.1GiI-H, 8.1Gi-J, 8.1Gi-JF, 8.1GXiE-JF, 8.1GXiE-J, 8.1GXiE-K, 8.1GXiE-KF, 8.1GXiE-M, 8.1GXiE-P, 8.1GXi-F, 8.1GXi-FF, 8.1GXi-G, 8.1GXi-GF, 8.1GXiI-F, 8.1GXiI-G, 8.1GXi-J, 8.1GXi-JF, 8.1IPSCE-JF, 8.1IPSCE-MF, 8.1IPSCE-P, 8.1IPSCE-Q, 8.1IPSE-JF, 8.1IPSE-KF, 8.1OSi-C, 8.1OSi-CF, 8.1OSi-D, 8.1OSi-DF, 8.1OSi-J, 8.1OSi-JF, 8.1OSiE-JF, 8.1OSiE-J