Sierra 18-1921 Manifold Elbow for GM V8 SB Engines (Most Models)

Sierra 18-1921 V-8 Small Block Exhaust Elbow

Sierra replacement exhaust elbow fits most GM V8 Small Blocks.

Use with:

• 18-1902 Manifold
• 18-1903 Manifold
• 18-8534 Exhaust Elbow Mounting Kit
• 18-8553 Hardware Kit [Exhaust Elbow Bolts]
• 18-0943-1-9 Exhaust Elbow Gasket

Replaces:

• OMC Inboard
• 0909863
• Mallory
• 9-40610
• Osco
• 9863
• OMC Stern Drive
• 909863
• Barr
• OMC-20-982680
• GLM
• 51320