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Sierra 18-4397 Mercruiser 27-46820A1 Big Block Exhaust Manifold Gasket Set
Sierra 18-4397 Mercruiser 27-46820A1 Big Block Exhaust Manifold Gasket Set
Sierra 18-4397 Mercruiser 27-46820A1 Big Block Exhaust Manifold Gasket Set
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Aftermarket Mercruiser 27-46820A1 Big Block Exhaust Manifold Gasket Set

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Aftermarket Mercruiser 27-46820A1 Big Block Exhaust Manifold Gasket SetThe Sierra 18-4397 Gasket Set contains the service components required for the applicable…
SKU: S-18-4397
Condition: New
mfg_code: 18-4397
$45.72
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Aftermarket Mercruiser 27-46820A1 Big Block Exhaust Manifold Gasket Set

$45.72
Product Details  

Aftermarket Mercruiser 27-46820A1 Big Block Exhaust Manifold Gasket Set

The Sierra 18-4397 Gasket Set contains the service components required for the applicable repair or maintenance task in Mercruiser applications. It replaces Mercury 27-46820A1.

For: Mercruiser GM big block 454 (7.4L) CID Eng; All 325; 350; 400 HP Jet Drives 330 HP S/N 6083144 & Below

Technical Specifications

  • Brand: Sierra Marine
  • Sierra Part Number: 18-4397
  • Product Type: Gasket Set
  • Application: Mercruiser

Kit Contents

Cross References & Alternative Products

  • Barr: MC472746820A1
  • GLM: 39120
  • Mercruiser: 27-46820A1
  • Mercury: 27-46820A1

Need help with fitment? Contact us with your engine model and serial number and we'll help check suitability.

Frequently Asked Questions

What is Sierra 18-4397?
Sierra 18-4397 is an aftermarket gasket set for Mercruiser applications.

Which part numbers cross-reference Sierra 18-4397?
This listing cross-references Barr MC472746820A1, GLM 39120, Mercruiser 27-46820A1 and Mercury 27-46820A1. See the Cross References & Alternative Products section above for linked alternatives where available.

How can I check whether Sierra 18-4397 fits my Mercruiser application?
Contact us with your engine model and serial number and we'll help check suitability.

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