Best Mercury Exhaust Manifold Kits: 10 Durable Picks

Looking for the best Mercury exhaust manifold kits? Here’s a guide to 10 top options that deliver durability, perfect fit, and reliable engine protection.

Finding the best Mercury exhaust manifold kits can feel tricky, but the right choice makes all the difference. A strong kit keeps your engine safe, smooth, and reliable.

These kits are tough. They fit right. They last long. With the right guide, you’ll know exactly which one gives your boat the power and protection it deserves.

List of Top 10 Mercury Exhaust Manifold Kits

Title	Best For	Price
Quicksilver 860235A03 Exhaust Manifold Kit for Select MerCruiser 3.0L L and LX Sterndrive Engines	This kit is perfect for boat owners who want a ready-to-install replacement for their MerCruiser 3.0L engines. It’s ideal for anyone who values durability, corrosion protection, and a complete set of parts in one box.	View on Amazon (paid link)
FASWORX Exhaust Manifold & Riser Kit for MerCruiser 5.0L (305), 5.7L (355), 6.2L (377) V8 Engines (Years 1983 – Early 2002) \| Wet Joint 4” Center-Rise Elbow \| Replaces 860246A15, 807988A03, 18-1953-2	This kit is perfect for boat owners who run MerCruiser V8 engines from 1983 to early 2002. It’s made for anyone who wants reliable performance and leak-free protection on the water.	View on Amazon (paid link)
FASWORX Exhaust Manifold & Riser Kit for MerCruiser 7.4L (454) 8.2L (502) Big Block V8 (1981-2002), Wet Joint 4” Center-Rise Elbow, Replaces 807078T08, 807988A03	This kit is perfect for boat owners running MerCruiser Big Block V8 engines who want reliable performance and leak-free protection. It’s made for anyone who values easy replacement with trusted OEM and aftermarket cross-references.	View on Amazon (paid link)
Quicksilver 860246A15 Exhaust Manifold for Select V8 MerCruiser Engines Made by GM	This exhaust manifold is perfect for boat owners who want long-lasting performance and strong protection against corrosion. It’s ideal for anyone running V8 MerCruiser engines in freshwater or saltwater.	View on Amazon (paid link)
FASWORX Manifold & Riser Kit for MerCruiser 7.4L, 8.2L GM V8 (454/502), 4” Center-Rise Elbow, 6 Inch Spacers, Wet-Joint 1983–2002	This kit is perfect for boat owners running MerCruiser 7.4L or 8.2L V8 engines who want a direct-fit replacement with leak-free performance. It’s made for anyone who values precision fitment and long-lasting protection for their engine.	View on Amazon (paid link)
FASWORX Exhaust Manifold & Riser Kit for MerCruiser 5.0L (305), 5.7L (355), 6.2L (377) V8 Engines (Late 2002 – Early 2004) \| Dry Joint 7 Degree Elbow \| Replaces 865735A02, 864308T01, 864309T02	This kit is perfect for boat owners running MerCruiser 5.0L, 5.7L, or 6.2L V8 engines who want a direct-fit replacement with leak-free performance. It’s made for anyone who values reliability and engine protection on the water.	View on Amazon (paid link)
FASWORX Dry Joint Exhaust Manifold kit with Riser/Elbows for Mercury Mercruiser 4.3L V6 Engines, 2005 and Newer (with 1.7 INCH Spacer Between Manifold and Riser/Elbow)	This kit is perfect for boat owners who want OEM quality without the OEM price. It’s made for anyone running a Mercruiser 4.3 V6 engine (2005 and newer) who needs a complete, reliable manifold and riser package that fits right the first time.	View on Amazon (paid link)
Dorman 674-958 Passenger Side Exhaust Manifold Kit – Includes Required Gaskets and Hardware Compatible with Select Ford / Mercury Models	This kit is perfect for Ford and Mercury owners who want a fast, reliable fix for a worn-out exhaust manifold. It’s made for drivers who value durable parts and a complete repair solution without the hassle.	View on Amazon (paid link)
Dorman 03411B Exhaust Manifold Hardware Kit Compatible with Select Ford / Lincoln / Mercury Models	This kit is perfect for Ford, Lincoln, and Mercury owners who need a strong, reliable fix for missing or damaged exhaust manifold hardware. It’s made for drivers who want durable parts that fit right and last long.	View on Amazon (paid link)
Dorman 674-707 Passenger Side Exhaust Manifold Kit – Includes Required Gaskets and Hardware Compatible with Select Ford / Mercury Models	This kit is perfect for Ford and Mercury owners who want a fast, reliable fix for a worn-out exhaust manifold. It’s made for drivers who value durable parts and a complete repair solution without hassle.	View on Amazon (paid link)

Detailed Reviews

Discover the Best Mercury Exhaust Manifold Kits with our expert guide. Each kit is reviewed for performance, durability, and value so you can buy with confidence. Simple, clear insights make it easy to find the perfect fit for your engine.

1. Quicksilver 860235A03 Exhaust Manifold Kit for Select MerCruiser 3.0L L and LX Sterndrive Engines

The Quicksilver 860235A03 Exhaust Manifold Kit is built for select MerCruiser 3.0L L and LX sterndrive engines. It’s a tough, reliable replacement that keeps your engine running strong.

This kit has it all. You get the lifting eye, gaskets, fuel line, bushings, and more. Every washer, fitting, and drain plug is included.

The cast iron manifold is coated for extra corrosion protection. Inside coolant passages stay safe. The outside finish stays clean and strong.

Pros	Cons
Complete kit with all needed parts included Fits select MerCruiser 3.0L L and LX engines Strong cast iron for lasting durability Corrosion protection inside and out Easy replacement for smooth installation	Heavy cast iron adds extra weight Limited fit—only for select MerCruiser engines Higher cost than generic aftermarket options

Perfect For:

This kit is perfect for boat owners who want a ready-to-install replacement for their MerCruiser 3.0L engines. It’s ideal for anyone who values durability, corrosion protection, and a complete set of parts in one box.

Ready to Purchase?

View Price on Amazon (paid link)

2. FASWORX Exhaust Manifold & Riser Kit for MerCruiser 5.0L (305), 5.7L (355), 6.2L (377) V8 Engines (Years 1983 – Early 2002) | Wet Joint 4” Center-Rise Elbow | Replaces 860246A15, 807988A03, 18-1953-2

FASWORX Exhaust Manifold & Riser Kit for MerCruiser 5.0L (305), 5.7L (355), 6.2L (377) V8 Engines (Years 1983 - Early 2002) | Wet Joint 4” Center-Rise Elbow | Replaces 860246A15, 807988A03, 18-1953-2

Built for MerCruiser V8 engines. Fits 1983 to early 2002 models. Designed for wet joint 4” center-rise elbows.

Replaces a wide range of OEM part numbers. Also matches top aftermarket brands like Sierra, Barr Marine, GLM, and Osco.

Tested for leak protection and perfect sealing. Includes premium stainless steel graphite gaskets for lasting performance.

Pros	Cons
Precise Fit for MerCruiser V8s 1983‑2002. Robust Leak‑Proof: pressure‑tested, flat mating surfaces. Easy Swap – replaces OEM parts with one kit. Durable Gaskets: stainless‑steel graphite, heat‑resistant. Quick Installation – 4‑inch center‑rise design.	Not compatible with engines after 2002 Heavy parts may be tough to install alone Higher cost than basic exhaust replacements

Perfect For:

This kit is perfect for boat owners who run MerCruiser V8 engines from 1983 to early 2002. It’s made for anyone who wants reliable performance and leak-free protection on the water.

Ready to Purchase?

View Price on Amazon (paid link)

3. FASWORX Exhaust Manifold & Riser Kit for MerCruiser 7.4L (454) 8.2L (502) Big Block V8 (1981-2002), Wet Joint 4” Center-Rise Elbow, Replaces 807078T08, 807988A03

FASWORX Exhaust Manifold & Riser Kit for MerCruiser 7.4L (454) 8.2L (502) Big Block V8 (1981-2002), Wet Joint 4” Center-Rise Elbow, Replaces 807078T08, 807988A03

The FASWORX Exhaust Manifold & Riser Kit is built for MerCruiser Big Block V8 engines. It fits 7.4L (454) and 8.2L (502) models from 1981 to early 2002. It replaces multiple OEM part numbers with a perfect fit.

Each part is pressure leak tested for reliability. Premium stainless steel graphite gaskets ensure a tight seal and protect your engine.

Pros	Cons
Direct OEM replacement for perfect fit and function Covers 1981–2002 MerCruiser Big Block engines Leak-tested design ensures lasting performance Premium gaskets included for superior heat protection Flat machined surfaces guarantee a tight, secure seal	Requires precision installation; mistakes waste time. Heavy components add extra weight to the boat. Costly compared to aftermarket alternatives.

Perfect For:

This kit is perfect for boat owners running MerCruiser Big Block V8 engines who want reliable performance and leak-free protection. It’s made for anyone who values easy replacement with trusted OEM and aftermarket cross-references.

Ready to Purchase?

View Price on Amazon (paid link)

4. Quicksilver 860246A15 Exhaust Manifold for Select V8 MerCruiser Engines Made by GM

The Quicksilver 860246A15 Exhaust Manifold is built tough for select V8 MerCruiser engines made by GM. Its cast iron design is coated inside and out to fight off corrosion.

It’s hot dipped and powder coated for long-lasting strength. Works in freshwater or saltwater. Fits on port or starboard sides with ease.

Made to OEM standards by Mercury Marine. Ensures top performance for your MerCruiser sterndrive. Keeps your engine running smooth and reliable.

Pros	Cons
Strong cast iron build for lasting durability Coated protection keeps rust and wear away Works in freshwater or saltwater with ease Fits select MerCruiser V8 engines perfectly Meets OEM specs for top performance	Heavy weight may make handling harder High price compared to aftermarket options Limited fit only for select GM MerCruiser engines

Perfect For:

This exhaust manifold is perfect for boat owners who want long-lasting performance and strong protection against corrosion. It’s ideal for anyone running V8 MerCruiser engines in freshwater or saltwater.

Ready to Purchase?

View Price on Amazon (paid link)

5. FASWORX Manifold & Riser Kit for MerCruiser 7.4L, 8.2L GM V8 (454/502), 4” Center-Rise Elbow, 6 Inch Spacers, Wet-Joint 1983–2002

The FASWORX Manifold & Riser Kit is built for MerCruiser Big Block V8 engines. It fits 7.4L and 8.2L models from 1983–2002 with wet-joint center-rise exhausts.

It replaces OEM parts. It matches aftermarket brands. It comes with a 6-inch spacer for perfect fit.

Every piece is pressure-tested for leaks. Surfaces are machined flat for a tight seal. Premium stainless steel graphite gaskets keep heat under control and protect your engine.

Pros	Cons
Direct OEM replacement for trusted fit and function Covers aftermarket brands for wide compatibility Perfect fit for MerCruiser Big Block V8 engines Leak-tested design ensures lasting performance Premium gaskets resist heat and protect your engine	Heavy kit may be tough to handle alone Not universal—fits only specific MerCruiser engines Premium price compared to budget alternatives

Perfect For:

This kit is perfect for boat owners running MerCruiser 7.4L or 8.2L V8 engines who want a direct-fit replacement with leak-free performance. It’s made for anyone who values precision fitment and long-lasting protection for their engine.

Ready to Purchase?

View Price on Amazon (paid link)

6. FASWORX Exhaust Manifold & Riser Kit for MerCruiser 5.0L (305), 5.7L (355), 6.2L (377) V8 Engines (Late 2002 – Early 2004) | Dry Joint 7 Degree Elbow | Replaces 865735A02, 864308T01, 864309T02

FASWORX Exhaust Manifold & Riser Kit for MerCruiser 5.0L (305), 5.7L (355), 6.2L (377) V8 Engines (Late 2002 - Early 2004) | Dry Joint 7 Degree Elbow | Replaces 865735A02, 864308T01, 864309T02

The FASWORX Exhaust Manifold & Riser Kit is built for MerCruiser V8 engines from late 2002 to early 2004. It’s a direct-fit replacement with OEM accuracy and aftermarket compatibility.

It fits 5.0L, 5.7L, and 6.2L engines. It’s made for Dry Joint systems with a 7-degree riser angle. The riser height is a short 6.5″–6.75″.

Every part is pressure leak tested. Surfaces are 100% machined flat for a perfect seal. Premium stainless steel graphite gaskets protect against heat and leaks.

Pros	Cons
Direct OEM replacement for trusted fit and function Wide aftermarket compatibility with leading marine brands Perfect fit for MerCruiser V8 engines (2002–2004) Leak-proof design with premium stainless steel gaskets Rigorous testing ensures long-lasting performance and protection	Limited fit range (only 2002–2004 engines) Not OEM branded (aftermarket replacement parts) Short riser height may not suit custom setups

Perfect For:

This kit is perfect for boat owners running MerCruiser 5.0L, 5.7L, or 6.2L V8 engines who want a direct-fit replacement with leak-free performance. It’s made for anyone who values reliability and engine protection on the water.

Ready to Purchase?

View Price on Amazon (paid link)

7. FASWORX Dry Joint Exhaust Manifold kit with Riser/Elbows for Mercury Mercruiser 4.3L V6 Engines, 2005 and Newer (with 1.7 INCH Spacer Between Manifold and Riser/Elbow)

FASWORX Dry Joint Exhaust Manifold kit with Riser/Elbows for Mercury Mercruiser 4.3L V6 Engines, 2005 and Newer (with 1.7 INCH Spacer Between Manifold and Riser/Elbow)

Get the FASWORX Dry Joint Exhaust Manifold kit built for Mercury Mercruiser 4.3L V6 engines. This package includes two manifolds, two riser/elbows, bolts, and gaskets.

It directly replaces OEM parts like 864591T02 risers, 864612T02 manifolds, and 865995A01 spacers. You get OEM quality without the OEM price.

Strong fit. Easy install. Long-lasting performance.

Pros	Cons
Complete kit with manifolds, risers, bolts, and gaskets Direct replacement for OEM parts at lower cost Tall risers for better fit and performance OEM quality without the OEM price tag Easy install with all parts included	Tall risers may not fit tight spaces OEM replacements only for listed part numbers Special spacer required, limits compatibility

Perfect For:

This kit is perfect for boat owners who want OEM quality without the OEM price. It’s made for anyone running a Mercruiser 4.3 V6 engine (2005 and newer) who needs a complete, reliable manifold and riser package that fits right the first time.

Ready to Purchase?

View Price on Amazon (paid link)

8. Dorman 674-958 Passenger Side Exhaust Manifold Kit – Includes Required Gaskets and Hardware Compatible with Select Ford / Mercury Models

Get a perfect fit with the Dorman 674-958 Passenger Side Exhaust Manifold Kit. It’s precision-engineered, built to match the stock manifold, and designed for select Ford and Mercury models. Installation is simple, and performance is reliable.

Count on durable construction that resists warping, cracking, and leaks. This kit includes all the gaskets and hardware you need for a complete repair. Built by an industry leader, it delivers long-lasting strength.

Ensure the right fit by using the garage tool to match your vehicle. Get the trustworthy design your car deserves.

Pros	Cons
Perfect fit for Ford and Mercury models Strong build resists cracks and leaks All-in-one kit with gaskets and hardware Trusted brand in aftermarket manifolds Easy check with vehicle fit tool	May not fit all Ford/Mercury trims Installation can be tricky for beginners Limited compatibility with non-listed models

Perfect For:

This kit is perfect for Ford and Mercury owners who want a fast, reliable fix for a worn-out exhaust manifold. It’s made for drivers who value durable parts and a complete repair solution without the hassle.

Ready to Purchase?

View Price on Amazon (paid link)

9. Dorman 03411B Exhaust Manifold Hardware Kit Compatible with Select Ford / Lincoln / Mercury Models

Get your engine running strong with the Dorman 03411B Exhaust Manifold Hardware Kit. It’s a direct replacement that fits select Ford, Lincoln, and Mercury models with ease.

This kit is the ideal solution when your original hardware is missing, damaged, or worn out. Built with durable construction, it delivers reliable performance and a long service life.

Easy to install. Made with trustworthy quality. Backed by over a century of automotive expertise.

Pros	Cons
Direct replacement for perfect fit every time Reliable solution for missing or damaged hardware Durable build ensures long-lasting performance Backed by 100+ years of trusted expertise Easy fit check with make, model, trim input	Not universal fit — only for select models No extras included beyond basic hardware Professional install may be needed for best results

Perfect For:

This kit is perfect for Ford, Lincoln, and Mercury owners who need a strong, reliable fix for missing or damaged exhaust manifold hardware. It’s made for drivers who want durable parts that fit right and last long.

Ready to Purchase?

View Price on Amazon (paid link)

10. Dorman 674-707 Passenger Side Exhaust Manifold Kit – Includes Required Gaskets and Hardware Compatible with Select Ford / Mercury Models

This exhaust manifold kit is made to fit like the original part. It is precision-engineered for exact performance. Strong materials help stop warping, cracking, and leaking.

It comes with all gaskets and hardware you need. Built by a trusted industry leader, it makes repair simple.

Pros	Cons
Perfect fit for select Ford and Mercury models Durable build resists warping, cracking, and leaking Complete kit with gaskets and hardware included Trusted brand backed by industry-leading expertise Easy install with garage tool fit check	May not fit all Ford/Mercury trims Installation can be tricky for beginners Extra tools needed beyond included hardware

Perfect For:

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Bigger engines need sturdy kits. A good kit keeps the engine cool. Pick one that fits.

Fit:
Fit must match your model and year. A wrong fit creates leaks.
Size:
Check the inch size of your engine. A proper size stops back‑pressure.
Material:
Pick cast iron or stainless steel. These stay strong under heat.
Coating:
Look for an anti‑corrosion coat. It guards against rust and salt.
Pressure:
The kit must handle engine pressure. Strong pressure resilience is key.
Gaskets:
Gaskets should seal tight. Good gaskets prevent leaks.
Compatibility:
Is it OEM or good aftermarket? Match your engine brand.
Warranty:
A brief warranty shows confidence. Keep it simple.
Price:
Balance cost with quality. Value matters more than lowest price.
Installation:
The kit should be easy to install. Clear hardware helps.
Brand:
Choose a trusted brand. Reliable makers give peace of mind.

Enjoy a smooth, reliable drive with a kit that fits and protects.