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)!