Sierra 18-8529 Exhaust Manifold Elbow Mounting Kit for MerCruiser GM V6 V8

The Sierra 18-8529 is a replacement exhaust manifold elbow mounting kit engineered for MerCruiser GM V6 and V8 stern drive engines equipped with a center rise and 3-inch exhaust elbow. Designed to secure the exhaust elbow to the manifold riser, this kit provides a reliable, leak-free seal in the demanding marine environment.

Used with Sierra riser 18-1970-1, this mounting kit includes the 18-0897 elbow gasket along with all necessary mounting hardware for a complete installation. Sierra products are engineered to meet or exceed OEM specifications, making this a direct-fit replacement for worn or corroded factory hardware.

Key Features:

• Complete exhaust elbow mounting kit for MerCruiser GM V6 and V8 engines
• Includes Sierra 18-0897 exhaust elbow gasket and mounting hardware
• Designed for use with center rise risers and 3-inch exhaust elbows
• Meets or exceeds OEM standards for marine-grade durability
• Covers applications from 1983–2002

Compatible Engine Applications:

• GM V-6 229 & 262 cu. in. — Models 185 & 205
• GM Small Block V-8 305–350 cu. in. — Models 200, 228, 230, 260 & 898
• GM Big Block V-8 454 cu. in. — Models 330, 340 & 7.4L

Use With: Sierra Riser 18-1970-1

Cross-Reference Part Numbers: GLM 53300 | Mallory 9-40580 | Osco 8503A-MK