860246A15 860246Q11 18 1953 2 Exhaust Manifold Riser Kit for MerCruiser 305 V8

This Exhaust Manifold and Riser Kit is a replacement exhaust system component compatible with MerCruiser 305 V8 engines and matches OEM Part# 860246A15, 860246Q11, and 18-1953-2.

Product Overview

The Exhaust Manifold and Riser Kit is designed for MerCruiser 305 V8 marine engines to efficiently expel exhaust gases and mix them with cooling water. This kit replaces worn or corroded manifolds and risers, restoring engine performance and preventing exhaust leaks. Ideal for boat owners and marine mechanics maintaining MerCruiser 305 V8 powerplants.

Key Features & Performance

• Direct-fit replacement for MerCruiser 305 V8 exhaust systems
• Constructed from high-grade cast iron for durability and heat resistance
• Includes both manifold and riser for a complete assembly
• Corrosion-resistant coating for marine environments
• Ensures proper exhaust flow and reduces backpressure
• Matches OEM specifications for accurate installation

Fitment & Compatibility

• MerCruiser 305 V8 (5.0L) engines

Common Uses

• Replacement of cracked or rusted exhaust manifolds in MerCruiser boats
• Restoring engine cooling and exhaust efficiency
• Routine maintenance during engine overhaul or season preparation
• Application in stern drive and inboard MerCruiser configurations

Technical Specifications

• Part Number(s): 860246A15, 860246Q11, 18-1953-2
• Material: Cast iron
• Kit Includes: Exhaust manifold, riser
• Engine Type: MerCruiser 305 V8 (5.0L)

Frequently Asked Questions

Q: Will this kit fit a MerCruiser 305 V8 with a 4-barrel carburetor? A: Yes, this exhaust manifold and riser kit is designed for standard 305 V8 configurations, including both 2-barrel and 4-barrel setups.

Q: Are gaskets included with this kit? A: The kit includes the manifold and riser; separate gasket sets are typically required and sold separately.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.