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)!

This riser was used on some mercruiser inboard applications with the log style manifolds. It fit models 225, 250, 255, 270, and 280, all with Chevrolet small block and big block engines. It fits and BARMC1-47737 manifolds, uses GLM31480 gaskets

Exhaust Riser for Mercruiser Sterndrive V8 Models 225, 250, 255, 270 and 280 with Log Style exhaust manifolds, fits BARMC1-47738 and BARMC1-47737 manifolds, uses GLM31480 gaskets