Best Beckarnley Engine Thermostat Seals in 2026
Daisy
Last Updated: Feb 8, 2026
Daisy
Last Updated: Feb 8, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Matches OE form, fit, and function
High quality rubber or composite material designed to withstand high heat conditions
Quality construction for durability
Packaged in clear plastic for easy visibility and identification of all components
Application specific to ensure a correct fit for your vehicle
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit
form
and function
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Parts Universe | 9.77 | ❌ | ❌ | ❌ |
Stant's STAT LOK adhesive-backed thermostat gaskets cut installation time by as much as 50%
The adhesive backing holds the thermostat securely centered in the counter bore, leaving both hands free to align and bolt down the outlet casting
No sticky, toxic gasket cement is required
With a knuckle-saving Stant Stat Lok gasket holding the thermostat in place, the thermostat won't drop out or become misaligned and cause the mounting flange of the outlet casting to crack.
Gaskets are cut to specific application requirements.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Newparts | 9.53 | ❌ | ❌ | ❌ |
Stant Thermostat/Water Outlet Seal features a grooved, chamfered I.D. design
Compliant rubber seal offers OE fit, form, and function
No sealer or RTV required for a leak proof seal
Rubber seals are custom fit to applications
Sold individually
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Country of Origin : China
The Package Height of the Product is 0.37 inches
The Package Length of the Product is 5.44 inches
The Package Width of the Product is 3.97 inches
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Stant Thermostat/Water Outlet Seal features a grooved, molded design
Compliant rubber seal offers OE fit, form, and function
No sealer or RTV required for a leak proof seal
Rubber seals are custom fit to applications
Sold individually
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Lifeline Brands | 9.87 | ❌ | ❌ | ❌ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Increases installation efficiency
Package Dimensions: 14.7 H x 0.6 L x 13.4 W (centimetres)
Package Weight: 0.012 kilograms
Country of Origin : United States
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Sonoran Desert Auto Parts LLC | 9.84 | ❌ | ❌ | ❌ |
Stant's STAT LOK adhesive-backed thermostat gaskets cut installation time by as much as 50%
The adhesive backing holds the thermostat securely centered in the counter bore, leaving both hands free to align and bolt down the outlet casting
No sticky, toxic gasket cement is required
With a knuckle-saving Stant Stat Lok gasket holding the thermostat in place, the thermostat won't drop out or become misaligned and cause the mounting flange of the outlet casting to crack.
Gaskets are cut to specific application requirements.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Matches OE form, fit, and function
High quality rubber or composite material designed to withstand high heat conditions
Quality construction for durability
Packaged in clear plastic for easy visibility and identification of all components
Application specific to ensure a correct fit for your vehicle
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Increases installation efficiency
Package Dimensions: 14.5 H x 1.3 L x 13.9 W (centimetres)
Package Weight: 0.022 kilograms
Country of Origin : China
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Sixity Auto | 9.87 | ❌ | ❌ | ❌ |
Self-adhesive backing holds thermostat in place while water outlet is being installed
Rubber thermostat seals also available
Increases installation efficiency
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Product Type :Auto Part
Package Dimensions :0.5 Cm L X 8.4 Cm W X 10.4 Cm H
Country Of Origin :China
Package Weight :0.25Lbs
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Stant Thermostat/Water Outlet Seal features a grooved, chamfered I.D. design
Compliant rubber seal offers OE fit, form, and function
No sealer or RTV required for a leak proof seal
Rubber seals are custom fit to applications
Sold individually
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Lifeline Brands | 9.87 | ❌ | ❌ | ❌ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| USAutopartsCar | 9.52 | ❌ | ❌ | ❌ |
Authentic Product
Fel-Pro Gaskets (by DRiV) Brand
Sold in sets of Individual Pack
Fel-Pro Gaskets (by DRiV) Part #35126
Brand new, never used.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| EASTAR | 8.26 | ❌ | ❌ | ❌ |
Color: Black
Material: Rubber
Size: approx.4.8x5.8x1.7cm(1.89x2.28x0.67")(IDxODxH)
Manufacturer Part Number: 3923331
Compatible With: Fit for Cummins 3.9L, 5.9L B Series 4B3.9, 4BT3.9, 4BTA3.9, 6B5.9, 6BT5.9, 6BTA5.9
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| letaous | 5.74 | ❌ | ❌ | ❌ |
Color: Black
Material: Rubber
Size: approx.4.8x5.8x1.7cm(1.89x2.28x0.67")(IDxODxH)
Manufacturer Part Number: 3923331
Compatible With: Fit for Cummins 3.9L, 5.9L B Series 4B3.9, 4BT3.9, 4BTA3.9, 6B5.9, 6BT5.9, 6BTA5.9
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products Available
MAHLE Original gaskets utilizes OE Equivalent or better materials in all our gaskets
MAHLE Original gaskets is the leader in domestic, Asian and European applications
The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Newparts | 9.54 | ❌ | ❌ | ❌ |
Stant Stat LOK adhesive-backed thermostat gaskets cut installation time by as much as 50%
The adhesive backing holds the thermostat securely centered in the counterbore, leaving both hands free to align and bolt down the outlet casting
No Sticky, toxic gasket Cement is required
With a knuckle-saving Stant Stat LOK gasket Holding the thermostat in place, the thermostat won't Drop out or become misaligned and cause the mounting flange of the outlet casting to crack.
Gaskets are cut to specific application requirements.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| AutoPartsKart | 9.53 | ❌ | ❌ | ❌ |
Stant Thermostat/Water Outlet Seal features a grooved design
Compliant rubber seal offers OE fit, form, and function
No sealer or RTV required for a leak proof seal
Rubber seals are custom fit to applications
Sold individually
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Self-adhesive backing holds thermostat in place while water outlet is being installed
Rubber thermostat seals also available
Increases installation efficiency
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Product Type :Auto Part
Package Dimensions :7.0 " L X 6.0 " W X 0.2 " H
Country Of Origin :China
Package Weight :0.25Lbs
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Gates | 10 |
| Mahle | 10 |
| Stant | 9 |
| Beck/Arnley | 6 |
| Fel-Pro | 6 |
| Mahle Original | 3 |
| Cicitree | 1 |
| Letaosk | 1 |
We've carried out a comprehensive analysis of 2,204 reviews on engine thermostat seals, using our selection criteria to identify the best options in the automotive replacement parts. Our findings reveal that most customers typically select engine thermostat seals priced around $6.37, with top brands including acdelco, mini, wahler oem germany, wahler, wahler germany, lisle, cummins, apdty and uro parts and omix-ada
Our team of expert editors reviewed these high-quality items and handpicked the top 29 engine thermostat seals for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive replacement parts category. These include amazon.com, bma parts - since 1978, euro partstar, newparts, mdi truck parts and auto parts direct to you and lqito auto .
We are dedicated to assisting our users in finding the right seals Products based on their needs, saving them considerable time when choosing which engine thermostat seals to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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