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Mr. Gasket 740 Thermostat Gasket for Small/Big Block Chevy & Chrysler

(GMC G2500 1979-85, K1500 1979-85, C1500 1979-85, K2500 1979-85, Jimmy 1970-85, C3500 1979-95, K2500 Suburban 1979-85, K3500 1979-90 + 135 more models)

Part of: Mr. Gasket Water Outlet Gaskets

Other options in this family: Mr. Gasket 740C Mr. Gasket 737G Mr. Gasket 738G

Manufacturer

Picture for manufacturer Mr. Gasket

Part Number

740
9 reviews
Sale Price

$5.28

In Stock (10+)

delivery box

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 Mr. Gasket 740 thermostat housing gasket provides a reliable seal for a wide range of popular V8 engines. This precision die-cut gasket is manufactured from a durable cellulose/nitrile composition material that delivers excellent sealing performance and long-lasting durability in high-temperature cooling system applications.

Key Features:

  • Cellulose/nitrile composition for superior sealing and heat resistance
  • Precision die-cut design ensures accurate fitment
  • Compatible with multiple engine platforms including Small Block and Big Block Chevy
  • Fits Chrysler 318/360 and Magnum 3.9L/5.2L/5.9L engines
  • Bulk packaged for cost-effective replacement

Application Coverage:

  • Small Block Chevy V8 engines (1955-1990)
  • Big Block Chevy V8 engines (1965-1990)
  • Small Block Chrysler 318/360 (1979-1992)
  • Small Block Chrysler 3.9L/5.2L/5.9L Magnum (1992-2003)

This replacement gasket helps prevent coolant leaks at the thermostat housing interface, ensuring your engine maintains proper operating temperature and cooling system integrity.

Products specifications

Fits

GMC G2500 1979-85, K1500 1979-85, C1500 1979-85, K2500 1979-85, Jimmy 1970-85, C3500 1979-95, K2500 Suburban 1979-85, K3500 1979-90, C15/C1500 Pickup 1967-74, 1979-83, C2500 1979-86, 1988-89, K1500 Suburban 1979-85 + 132 more models

Brand

Mr. Gasket

Category

Gaskets

Emission Code

5

Engine

Chevrolet Big Block Mark IV

Engine

Chrysler Small Block Magnum

Engine

Chrysler Small Block LA

Material

Performance

Packaging

Bulk

Product Type

Thermostat Housing Gasket

Warning

California Proposition 65

Warranty

Manufacturer's Limited 90 Day Warranty

Weight

0.38

Not only was our item cheaper, it arrived quickly. Will def. purchase from Autoplicity again! Thanks!

So far I love everything that is taking place

Super Fast! Website was easy to user, multiple different payment options (Amazon, Paypal, Credit Card) Got a notification of shipment within 1 hour!

Great service, awesome prices, incredibly fast shipping. A++ I would absolutely suggest you to my friends and family

quick response and unbelievably CHEAP prices.

Excellent service, quick ship. An easy transaction.

Ordered a set of 5 steel wheels, distributor messed up and only sent me 4. 5th wheel is taking a good couple weeks to arrive due to the distributor messing up the shipment. Autoplicity did make things right and I can honestly say now I would recommend them.

- Updated review -<br>Autoplicity.com contacted me after my original review and admitted to making a mistake with my order. They have refunded my shipping and I am happy now.<br><br>- Original review -<br>After 18 days the part finally arrived. The filter appears to have been sent directly from K&N, but I ordered on the 20th of June, yet the packing date that K&N Engineering Inc. shows is July 3rd.

Very pleased with Autoplicity's fast and efficient service. The part I ordered fit and looked great. Will definitely consider Autoplicity for future orders. Thanks.

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