Exhaust Riser for a Mercruiser. It will fit the early model 120 prior to 1983, and the 160 inline 6. It will fit the following manifolds: BARMC-1-63122 & Osco # MO618-55 manifolds. It uses Osco # 5538-G gaskets. This item replaces Mercury Quicksilver #s: 39920, 55538, 55538A2; Barr # MC-20-55538; Sierra # 18-1973; Mallory # 9-40553

Barr Manifolds and Risers come with a 3-year limited warranty (PDF)!

Exhaust Riser for Mercruiser Inboard/Outboard with rear riser.

Fits GM and Ford Based V8 Engines 1982 and Earlier

Fits Inline 4 Cylinder 120HP 153 2.5L 1984 and newer that use a 4 bolt riser.

Fits 140HP 181 3.0L all years that have a 4 bolt riser

Inline 6 Cylinder 165 and 200HP Models.

The Riser Mounting Pad for this Riser is 3-3/4 x 4 Inches

Uses Osco # 6351-G gasket

Replaces Mercruiser #: 76351A04, 76351A1, 76351A2, 60426A1, 49964A2, 49964A1
Osco # 6351
GLM # 51120
Sierra # 18-1971
Mallory # 9-40558
HGE # 6351

Barr Manifolds and Risers come with a 3-year limited warranty (PDF)!

Exhaust elbow riser for most V8 Inboard applications with th log style manifolds.

Replaces Mercruiser #: B-76771A3, 76771A2
Osco # 6771
Mallory # 9-40556
GLM # 51190
Sierra # 18-1978.

The riser pad on this riser is 3-3/4 x 4 Inches.

Used on both Ford & GM V8 Inboard engines with log style manifolds prior to 1983.

This Riser was used on straight inboards.
Includes Riser Gasket and mounting hardware.

Barr Manifolds and Risers come with a 3-year limited warranty (PDF)!