SKU: 53315408933

Sierra MerCruiser 4.3 Liter V6 Exhaust Manifold 99746A17 9975 18-19521

Sale price$185.80 Regular price$206.44
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Description

Sierra MerCruiser 4.3 Liter V6 Exhaust Manifold 99746A17 9975 18-19521Sierra 18 1952 1 Replacement Exhaust Manifold Kit For MerCruiser V6 4. 3 Liter 02 and older engines Will not work for dry joint systems Kit Contains: 1x Exhaust Manifold 1x Mounting Package 1x Manifold to Riser Elbow Gasket 1x Manifold to Head Gasket 1x Drain Elbow Plug Replaces: Osco: 9745 GLM: 51220 MerCruiser: 99746A17 Barr marine: 1 99746 Sierra manifolds are painted, packaged and leak tested. Sierra 18 1952 1 Replacement Exhaust Manifold Kit For

Sierra 18-1952-1 Replacement Exhaust Manifold Kit

For MerCruiser V6 4.3 Liter 02 and older engines

Will not work for dry joint systems

Kit Contains:
 • 1x Exhaust Manifold
 • 1x Mounting Package
 • 1x Manifold to Riser/Elbow Gasket
 • 1x Manifold to Head Gasket
 • 1x Drain Elbow Plug

Replaces:
 • Osco: 9745
 • GLM: 51220
 • MerCruiser: 99746A17
 • Barr marine: 1-99746

Sierra manifolds are painted, packaged and leak tested.

Sierra 18-1952-1 Replacement Exhaust Manifold Kit 

For Sierra MerCruiser 4.3 Liter Exhaust Manifold V6 Engine

  • Clean exhaust channels, high quality, homogeneous wall thickness externally, shot-peened for a smooth finish to provide a precise gasket mating surface, all mounting surfaces have been CNC machined. 
  • Exhaust channels are clean and of good quality, with consistent wall thickness.
  • Externally, shot-peened for a smooth finish.
  • Surfaces for mounting CNC machining ensure a precise gasket mating surface.
  • The manufacturer examined for leaks and applied a baked enamel finish.

SPECS

UPC:
808282237448
MPN:
18-19521

 

Shipping Notes
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Exchange/Return Notes
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SKU: 53315408933

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4.3 ★★★★★
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J
Verified Purchase
J.W.
San Leandro, US
★★★★★ 5
Well made.
Color: Black, Size: 6 FT
I bought a version this product maybe for years ago. Suffice to say that the outlets were too loose. The plugs rattle around and regularly lost electrical conduct. Not a problem with these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
J
Verified Purchase
Jim L.
Draper, US
★★★★★ 4
nice fit and powerful
Color: Black, Size: 6 FT
is pretty powerful
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
I
Verified Purchase
Island Dreaming
Lake Worth, US
★★★★★ 5
Great quality
Color: White, Size: 6 FT
Works as anticipated and easy directions to follow
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2026
S
Verified Purchase
SCOTT H
Cuba, US
★★★★★ 5
Measure first saves time!
Color: White, Size: 6 FT
I liked the product but didn’t fit my vanity and my wife said to send it back that it wasn’t needed for her hair dryers. Great idea just wrong for me.
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Reviewed in the United States on April 30, 2026
D
Verified Purchase
David Mendez
Pawtucket, US
★★★★★ 5
Good power and function
Color: Black, Size: 6 FT
Bought 2 of these for a built in desk in my home office. Installed 2 weeks ago and works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026

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