10 Best bluedevil rear main sealers of 2026

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1

BlueDevil Products

BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)
9.9

Exceptional

Our Rating
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Value for Money

2

BlueDevil Products
BlueDevil Products 38386 Head Gasket Sealer - 1 Quart
Main highlights

Easy to Use and Permanent Seal
The BlueDevil Head Gasket Sealer is user-friendly and provides a permanent seal for leaks.

Ideal for Engine Leak Repairs
Perfect for sealing leaks in head gaskets, cracked heads, and more.

Effective Leak Sealing
Highly praised for successfully sealing engine leaks, as noted by customers.
9.8

Exceptional

Our Rating

8.0
Simple to use

8.0
worth the money

8.0
distance
3

BlueDevil Products
BlueDevil Products 00234 Rear Main Sealer - 8 Ounce
Main highlights

Permanent Seal Solution
Flows into damaged areas for a permanent seal without frequent reapplication.

Versatile Engine Compatibility
Ideal for gasoline or diesel engines with synthetic or conventional oils.

Ease of Use Praised
Customers appreciate the simple pour-in application process.
Key specs
- Volume:8 ounces
- Item Form:Liquid
- Compatible Material:Rubber seals
- Special Feature:Permanent seal
- Cure Time:N/A
9.6

Exceptional

Our Rating
4

BlueDevil Products

BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 2)
9.5

Excellent

Our Rating
5

Bar's Leaks
Bar's Leaks Rear Main Seal Repair, 16.9 oz
Main highlights

Seals Various Oil Leaks Effectively
Seals timing cover, cam seal, rear main, and other hard-to-stop oil leaks. Add to engine oil. Works better than conventional stop leaks.

Ideal for Rear Main Seal Issues
Specifically designed to seal rear main leaks. Add entire bottle to engine crankcase where you add oil at or between oil changes.

Highly Effective in Stopping Leaks
Customers praise its effectiveness in stopping leaks, especially rear main seal leaks, within a few hundred miles of driving. Highly recommended for maintenance.
Key specs
- product dimensions:1.9 x 3.4 x 7.7 inches
- special features:Seals timing cover, cam seal
- fuel type:N/A
- item size:N/A
- package dimensions:N/A
9.2

Excellent

Our Rating
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6

BlueDevil Products
BlueDevil Products 49499 Oil Stop Leak - 8 Ounce
Main highlights

Easy to Use Formula
The BlueDevil Oil Stop Leak is designed for easy application by simply pouring the recommended amount into the oil slump or crank case.

Versatile Engine Compatibility
Compatible with both gasoline and diesel engines, making it suitable for a wide range of vehicles including cars, trucks, and SUVs.

Permanent Seal Solution
Formulated to provide a permanent seal for oil leaks, ensuring that your vehicle remains leak-free even after extensive driving.
9.1

Excellent

Our Rating
7

BlueDevil Products

BlueDevil Products Hydraulic Stop Leak – 32 oz | Restores Seals & Stops Leaks in Hydraulic Systems | Safe for Pumps, Cylinders & Valves
8.9

Very Good

Our Rating
8

BlueDevil Products
BlueDevil Products Transmission Sealer – 16 oz | Seals Leaks in Automatic & Manual Transmissions | Restores Seals & Prevents Fluid Loss
Main highlights

Guaranteed Permanent Seal
Ensures long-lasting sealing for transmission leaks, preventing future issues.

Ideal for Restoring Rubber Seals
Perfect for dried, cracked, and shrunken rubber seals in transmissions.

Praised for Versatile Application
Highly regarded for its compatibility with both manual and automatic transmissions.
Key specs
- country:USA
- fitment:Manual or Automatic Transmissions
- part number:00236
- seal type:Permanent Seal
- asin:B0079JWMME
8.7

Very Good

Our Rating
9

BlueDevil Products
BlueDevil Products 00209 Pour-N-Go Head Gasket Sealer - 16 Ounce
Main highlights

Easy to Use Formula
Pour-N-Go design allows quick, easy leak sealing without tools.

Versatile Engine Compatibility
Works with gasoline and diesel engines for various vehicles.

Highly Praised Permanent Seal
Customers love the effective permanent seal for head gaskets.
Key specs
- Form:Liquid
- Size:2.75 x 2.75 x 5.5 inches
- Color:Blue
- Style:Compact
- Material:Plastic
8.6

Very Good

Our Rating

9.7
worth the money

9.5
Simple to use

8.7
Tech Support
10

Bar's Leaks

Bar's Leaks Rear Main Seal Repair, 16.9 oz (Pack of 2)
8.5

Good

Our Rating

10 Best bluedevil rear main sealers of 2026

1

BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)

How do we rank?

How do we rank?

Analyzing top stores

2

BlueDevil Products 38386 Head Gasket Sealer - 1 Quart

8.0

8.0

8.0

3

BlueDevil Products 00234 Rear Main Sealer - 8 Ounce

4

BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 2)

5

Bar's Leaks Rear Main Seal Repair, 16.9 oz

6

BlueDevil Products 49499 Oil Stop Leak - 8 Ounce

7

BlueDevil Products Hydraulic Stop Leak – 32 oz | Restores Seals & Stops Leaks in Hydraulic Systems | Safe for Pumps, Cylinders & Valves

8

BlueDevil Products Transmission Sealer – 16 oz | Seals Leaks in Automatic & Manual Transmissions | Restores Seals & Prevents Fluid Loss

9

BlueDevil Products 00209 Pour-N-Go Head Gasket Sealer - 16 Ounce

9.7

9.5

8.7

10

Bar's Leaks Rear Main Seal Repair, 16.9 oz (Pack of 2)

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