12567904 Mercruiser Throttle Body | Genuine Used Part

🔧 Product Description

Genuine GM / MerCruiser Electronic Fuel Injection Throttle Body - Part Number: 12567904

A genuine GM throttle-body casting used on selected MerCruiser 5.7L and 6.2L V8 electronic-fuel-injection engines. The assembly meters intake air and carries the throttle plate, shaft, throttle-position sensor and idle-control components where supplied complete.

⚙️ Key Features

• Genuine GM-based MerCruiser throttle body

• Casting / component number 12567904

• Used on selected 350 CID and 377 CID V8 engines

• Compatible with MerCruiser EFI and MPI intake systems where specified

• Factory-sized throttle bore for the corresponding ECM calibration

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 12602329 later GM throttle-body reference for related LG9 applications

• 12567904 earlier GM throttle-body casting

• MerCruiser service assemblies 861536A1 and 807671A1 use the related throttle-body configuration

OEM / Related Numbers:

• 12567904

• 12602329

• 12602325 related GM throttle-body reference

• 861536A1 MerCruiser throttle-body assembly

• 807671A1 MerCruiser throttle-body assembly

• 12570362 throttle-body gasket

• 12606638 related throttle-body gasket

Aftermarket / Verified Equivalents:

• General Motors: 12567904

• General Motors: 12602329 later related replacement

• MerCruiser: 861536A1

• MerCruiser: 807671A1

🚤 Compatibility

Commonly used on:

• MerCruiser GM small-block V8 EFI and MPI intake systems

• 5.7L / 350 CID and 6.2L / 377 CID petrol marine engines

Typically suits:

• Engine models:

• MerCruiser 5.7L EFI

• MerCruiser 5.7L MPI

• MerCruiser 350 MAG EFI

• MerCruiser 350 MAG MPI

• MerCruiser 6.2L MPI

• MerCruiser 377 MAG MPI

• MerCruiser 5.7L and 6.2L V8 applications produced approximately 1996-2001 using service assemblies 861536A1 or 807671A1

• Related GM LG9 industrial / marine engine applications using casting 12567904

• Engine Size: 5.7L and 6.2L / 350 and 377 CID

• Engine Type: MerCruiser GM small-block V8 EFI / MPI petrol engine

• Year Range: Approximately 1996-2001 for common MerCruiser applications

🔌 Function

The throttle body controls intake-air volume according to helm-throttle input. The ECM uses throttle-position and manifold data to calculate fuel delivery, ignition timing and idle control.

Common signs of failure:

• Sticking throttle plate

• Unstable or high idle

• Hesitation during acceleration

• Throttle-position sensor faults

• Idle-air-control faults

• Excessive shaft wear or unmetered-air leakage

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated