13220 Aftermarket Mercruiser Carburettor Kit GM420 V8 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Holley 4-Barrel Carburettor Repair Kit - Replaces Part Number: 13220

New aftermarket overhaul kit replacing MerCruiser 13220 for high-output Holley four-barrel marine carburettors. It services carburetted big-block performance engines from the 370 TRS through the 500 Bulldog family and restores sealing, accelerator-pump operation, needle-and-seat control and power-valve fuel delivery.

⚙️ Key Features

• Direct replacement for MerCruiser 13220

• Designed for Holley marine four-barrel carburettors

• Supports GM 454, 482, 502 and 540 V8 performance engines

• Marine-grade fuel-resistant overhaul components

• One kit services one four-barrel carburettor

🧰 Kit Contents

• Four-barrel gasket and seal package - supplied under kit P/N 13220

• Needle-and-seat service components - supplied under kit P/N 13220

• Accelerator-pump diaphragm and check components - supplied under kit P/N 13220

• Power-valve and metering-block seals - supplied under kit P/N 13220

• Fuel-bowl and carburettor mounting gaskets - supplied under kit P/N 13220

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 13220 (MerCruiser OEM rebuild-kit reference)

OEM / Related Numbers:

• 13220

• REC13220

Aftermarket / Verified Equivalents:

• Sierra: 18-7751

• WSM: 600-237

• GLM: 76110

• Recmar: REC13220

• Walker: WK-19063

🚤 Compatibility

Commonly used on:

• MerCruiser high-performance sterndrive and inboard engines with Holley four-barrel carburettors

Typically suits:

• Engine models:

• 370 TRS GM 454 V8 (1978-1985)

• 400 TRS GM 454 V8 (1980-1986)

• 420 GM 454 V8 (1987-1989)

• 425 GM 454 V8 and 425 Gen V (1990-1993)

• 440 TRS GM 454 V8 (1983-1986)

• 450 GM 454 V8 (1995-1996)

• 460 TRS GM 482 V8 (1983-1986)

• 465 GM 502 V8 and 465 Gen V (1990-1994)

• 500 Gen V/Gen VI/Gen+ GM 502 V8 (1994-1999)

• 500 Bulldog GM 540 V8 (1990-2001)

• HP Range: Approximately 370HP - 500HP

• Engine Type: Carburetted GM big-block V8 marine engine

• Year Range: Approximately 1978 - 2001

• Serial / Carburettor Identification: Confirm the Holley carburettor list number and MerCruiser engine serial before ordering.

🔌 Function

The kit renews the wear and sealing components used to control fuel level, meter fuel through the carburettor and prevent air or fuel leaks after the carburettor is dismantled for cleaning.

Common signs of failure:

• Hard starting or the need for excessive choke

• Unstable, hanging or excessively low idle

• Fuel leaking, flooding or fuel smell around the carburettor

• Hesitation, flat spot or stalling during acceleration

• Uneven cylinder fuelling, poor power or excessive fuel consumption

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging