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Sierra 18-1278 Marine Head Gasket Set Chevy V6 4.3L 262 Valve Grind Kit

Manufacturer

Sierra

<p>For nearly six decades, Sierra has established itself as one of the marine industry's most trusted names in aftermarket engine and drive parts. Founded as a specialized marine parts manufacturer, Sierra has grown into a comprehensive supplier of replacement components, instrumentation, and accessories for both recreational and commercial boating applications. Operating from their 300,000-square-foot distribution center in Litchfield, Illinois, Sierra serves boat owners and marine technicians worldwide with an extensive catalog of parts engineered specifically for the harsh saltwater environment.</p><h3>Marine Engine Excellence</h3><p>Sierra's reputation was built on delivering precision-engineered internal engine components and drive system parts that meet or exceed OEM specifications. Their <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> provide critical sealing solutions for inboard and outboard motors, while their <a href="/7570-sierra-engine-complete-assembly-15341">engine complete assemblies</a> offer comprehensive replacement options for major overhauls. Each component undergoes rigorous testing to ensure reliability in demanding marine conditions, from corrosion resistance to temperature cycling performance.</p><h3>Instrumentation and Monitoring Systems</h3><p>Accurate instrumentation is essential for boat operators to monitor engine health and prevent costly breakdowns on the water. Sierra's comprehensive line of <a href="/7570-sierra-gauges-200483">gauges</a> includes everything from fuel pressure and temperature indicators to voltmeters and trim gauges, all designed with marine-grade materials that withstand vibration, moisture, and UV exposure. Their <a href="/7570-sierra-tachometer-gauge-1488">tachometer gauges</a> deliver precise RPM readings critical for optimizing engine performance and fuel efficiency. Supporting these instruments, Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> ensure proper signal conditioning and accurate readings across various sensor types and engine configurations.</p><h3>Expanded Product Portfolio</h3><p>In 2022, Sierra significantly broadened its scope beyond traditional marine engine parts to encompass a wider range of boating accessories and even outdoor power equipment components. This strategic expansion brought established marine brands like Shields and Moeller under the Sierra umbrella, creating a one-stop resource for marine maintenance and replacement parts. The company now offers fuel systems, electrical components, battery charging solutions, and NMEA electronics alongside their traditional engine parts lineup.</p><h3>Quality Backed by Industry-Leading Warranties</h3><p>What sets Sierra apart in the crowded aftermarket marine parts market is their commitment to standing behind every component they manufacture. Their warranty coverage extends beyond simple part replacement—it includes shop labor, haul-out fees, towing charges, and related incidental costs should a warrantied part fail. This comprehensive protection reflects the company's confidence in their manufacturing processes and quality control standards. For boat owners facing repairs far from shore or mechanics working on customer vessels, this peace of mind is invaluable. Whether you're maintaining an outboard motor, rebuilding an inboard engine, or upgrading your boat's instrumentation, Sierra's decades of marine industry experience and commitment to quality make them a reliable choice for keeping your vessel running at peak performance.</p>

Part Number

18-1278
08/03/2036 12:10 PM
Sale Price

$161.62

1 left at this price

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-1278 is a complete marine valve grind / head gasket set designed for popular Chevrolet V6 inboard and stern drive engines. Part of Sierra's modular gasket system, this kit is engineered to meet or exceed OEM specifications, delivering reliable sealing performance during engine overhauls and rebuilds in demanding marine environments.

Sierra's modular approach minimizes inventory investment by covering the most common engine applications through a mix-and-match system. Generic-type gasket kits are shared across major engine brands, meaning the same head and valve grind gasket set serves multiple engine families while brand-specific exhaust manifold kits are used where required.

Kit Contents:

  • (2) Head Gaskets — Sierra 18-3879
  • (1) Intake Gasket Set — Sierra 18-1238
  • (2) Valve Cover Gaskets — Sierra 18-0311
  • (1) 2BBL Carburetor Mounting Gasket — Sierra 18-0994
  • (1) 4BBL Carburetor Mounting Gasket — Sierra 18-0463
  • (6) Intake Valve Stem Seals — Sierra 18-4024
  • (12) Valve Stem Seals — Sierra 18-0518
  • (1) Distributor Mounting Gasket — Sierra 18-0874

Key Features:

  • Meets or exceeds original equipment specifications
  • Part of Sierra's modular gasket system for flexible coverage
  • Engineered for high-horsepower marine engine demands
  • Compatible with Mercruiser Stern Drive, OMC Stern Drive, and Volvo Penta applications
  • UPC: 808282238261

California Residents: WARNING — Cancer and Reproductive Harm. See P65Warnings.ca.gov.

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