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Exhaust Manifold Kit Compatible With 1968-1990 Mercruiser Mcm 140 Gm 181 Cid 3.0L Mcm 120 Gm 153 Cid

51212A1
OEM PART NUMBERS:
• Mercury Marine / MerCruiser: 96705A1 (primary current number)
• Mercury Marine / MerCruiser: 53290A1 (superseded by 96705A1)
• Mercury Marine / MerCruiser: 53290 (earlier variant, superseded)
• Mercury Marine / MerCruiser: 95861 (earliest variant, superseded)
• No-dash variants: 96705A1 53290A1 53290 95861

SPECIFICATIONS:
• Type: Exhaust Manifold Kit (End-Rise / Log Style)
• Cooling: Water-Cooled (Wet Joint)
• Carburetor Flange: Rochester 2bbl Mechanical Choke, 1-7/8" x 3-3/16"
• Mounting Pattern: 5-Bolt
• Material: Cast Iron
• Displacement: 153 CID (2.5L) and 181 CID (3.0L) GM Inline 4-Cyl
• Condition: New — Complete Kit with Gaskets and Hardware

APPLICATIONS SUMMARY:
• MerCruiser MCM 140 GM 181 CID 3.0L Inline 4-Cyl (1968-1982)
• MerCruiser MCM 120 GM 153 CID 2.5L Inline 4-Cyl (1968-1982)
• S/N 2508319 through 6225717

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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Description

MERCRUISER MCM MODEL 140 — GM 181 CID 3.0L INLINE 4-CYL (1968-1982):
• MerCruiser MCM 140 GM 181 CID (3.0L) Inline 4-Cyl Rochester 2bbl Carb 140HP Sterndrive (1968-1982)
• Serial Numbers: 2508319 through 6225717

MERCRUISER MCM MODEL 120 — GM 153 CID 2.5L INLINE 4-CYL (1968-1982):
• MerCruiser MCM 120 GM 153 CID (2.5L) Inline 4-Cyl Rochester 2bbl Carb 120HP Sterndrive (1968-1982)
• Serial Numbers: 2508319 through 6225717

KIT CONTENTS:
• Cast iron exhaust manifold (end-rise / log style, water-cooled wet joint)
• Head / cylinder gaskets (x2 flat, x2 cutout style)
• Combination head-to-exhaust gasket (long, 5-port)
• End cover plate (blank) and thermostat housing
• Mounting studs (x5), screws, and full hardware set
• Drain/access plug and fittings
• RTV sealant packet

FITMENT NOTES:
• Rochester 2bbl carburetor with mechanical choke — 5-bolt mounting pattern
• Carb flange: 1-7/8" x 3-3/16"
• End-rise (log) wet joint style — does NOT fit 1990+ 3.0L MerCruiser (use 860235A03/51214)
• Does NOT fit Mercarb / Quadrajet carbureted models
• Includes all plugs, gaskets, studs, and mounting hardware for complete installation

Details

Shipping Information

  • Item Requires Shipping
  • 30.0 lbs.
  • W10.0000” x H10.0000” x L14.0000”
  • Free Shipping!

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