SKU: 87099351790

Cometic Pontiac 389/421 V8 4.3in Bore .040in MLS Head Gasket

$111.60 $124.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

Cometic Pontiac 389/421 V8 4.3in Bore .040in MLS Head GasketThe HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block. The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes The center or shim layer is an uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements Requires less clamp load

The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.

  • The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes
  • The center or shim layer is an uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements
  • Requires less clamp load creating less bore distortion
  • Conforms load distribution across the sealing area
  • Embossed Outer Layers Coated w/Viton

This Part Fits:

Year Make Model Submodel
1949-1954 Jaguar XK120 Base
1952-1954 Jaguar XK120 M
1955-1957 Jaguar XK140 Base
1955-1957 Jaguar XK140 M
1955-1957 Jaguar XK140 MC
1958-1961 Jaguar XK150 Base
1958-1961 Jaguar XK150 S
1959-1966 Pontiac Bonneville Base
1959-1962 Pontiac Bonneville Custom
1959-1966 Pontiac Bonneville Safari
1964-1966 Pontiac Catalina 2+2
1959-1966 Pontiac Catalina Base
1959-1966 Pontiac Catalina Safari
1962-1966 Pontiac Catalina Ventura
1962-1966 Pontiac Grand Prix Base
1964-1966 Pontiac GTO Base
1959-1966 Pontiac Star Chief Base
1966 Pontiac Star Chief Executive
1961,1963-1966 Pontiac Tempest Base
1964-1965 Pontiac Tempest Custom
1961 Pontiac Tempest LeMans
1961,1963-1966 Pontiac Tempest Safari
1960-1961 Pontiac Ventura Base
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 87099351790

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4.9 ★★★★★
Based on 9 reviews
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A
Verified Purchase
Astrid Falcon
Dallas, US
★★★★★ 5
Heavy duty and has lasted three years so far
I have had this relay installed in the engine bay of my Lexus RX 300, functioning to link the front battery to the additional battery in the trunk whenever the ignition is on. The relay has worked reliably for about three years now with no complaints besides one minor comment, be careful when threading down the nut on the Low voltage side. It is prone to stripping
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2025
D
Verified Purchase
Dr.Ortiz Ayala
Draper, US
★★★★★ 5
It delivers as advertised.
Works as advertised, and is easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 18, 2025
J
Verified Purchase
JOHN A.
Port Orchard, US
★★★★★ 5
Heavy Duty!!
Performed extremely well. No buzzzing or poor connection. Extremely well built and has been working issue free for over 6 months! Instalation can be a bit difficult due to size and weight. Not really a problem.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2024
S
Verified Purchase
shawn
West Palm Beach, US
★★★★★ 4
Seems to be ok for the money
We use it to power a 2000w inverter for the refrigerator and microwave on our boat where sometimes it will stay on continuously throughout the day and it hasn't let us down. As others have said, the terminals are awful close together but for the money, it's worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2025
W
Verified Purchase
WN
Fort Morgan, US
★★★★★ 5
Been doing great since 2020
Used this to replace the charging solenoid on my diesel motorhome. Originally used a White-Rodgers OEM relay and it only lasted about 18 months. This has been going strong since 2020 and I use my motorhome about 10 months out of the year with lots of miles.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 2, 2024

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