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Engine Block Sealant

Uses item details. Price when purchased online

(24 pack) BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer $479.28 $2.50/oz

(24 pack) BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer
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Sponsored
current price $479.28
$2.50/oz
From $19.97

(24 pack) BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer

4.1 out of 5 Stars. 261 reviews

Hot Shot's Secret FR3 Oil Treatment for Gas & Diesel Engines 16 oz From $18.50

Hot Shot's Secret FR3 Oil Treatment for Gas & Diesel Engines 16 oz
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Sponsored
From$1850

Hot Shot's Secret FR3 Oil Treatment for Gas & Diesel Engines 16 oz

4.9 out of 5 Stars. 493 reviews

Hot Shot's Secret Stiction Eliminator Oil Treatment for Gas & Diesel Engines 16 oz. From $17.78

Hot Shot's Secret Stiction Eliminator Oil Treatment for Gas & Diesel Engines 16 oz.
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From$1778

Hot Shot's Secret Stiction Eliminator Oil Treatment for Gas & Diesel Engines 16 oz.

4.9 out of 5 Stars. 784 reviews

Slick 50 ReCharged High Mileage Engine Treatment Automotive Additive, 10W-30 Motor Oil, 32 Ounce From $17.97

Slick 50 ReCharged High Mileage Engine Treatment Automotive Additive, 10W-30 Motor Oil, 32 Ounce
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From$1797

Slick 50 ReCharged High Mileage Engine Treatment Automotive Additive, 10W-30 Motor Oil, 32 Ounce

4.8 out of 5 Stars. 133 reviews

Bar's Leaks 1100 Block Seal Head Gasket Sealant Automotive Additive, 20 oz $14.99

Bar's Leaks 1100 Block Seal Head Gasket Sealant Automotive Additive, 20 oz
current price $14.99

Bar's Leaks 1100 Block Seal Head Gasket Sealant Automotive Additive, 20 oz

4.7 out of 5 Stars. 631 reviews

Bar's Leaks Block Seal Liquid Copper Coolant Leak Fix, Antifreeze and Coolants, 18 oz From $7.97

Bar's Leaks Block Seal Liquid Copper Coolant Leak Fix, Antifreeze and Coolants, 18 oz
Available in additional 2 options
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From$797

Bar's Leaks Block Seal Liquid Copper Coolant Leak Fix, Antifreeze and Coolants, 18 oz

4.6 out of 5 Stars. 556 reviews

K&W 401232 Permanent Head Gasket and Block Repair 32 oz For Cars, Trucks, and Other Vehicles $39.99

K&W 401232 Permanent Head Gasket and Block Repair 32 oz For Cars, Trucks, and Other Vehicles
current price $39.99

K&W 401232 Permanent Head Gasket and Block Repair 32 oz For Cars, Trucks, and Other Vehicles

4.4 out of 5 Stars. 22 reviews

K&W FiberLock Head Gasket & Block Repair 32 fl oz $43.75 Was $52.38

K&W FiberLock Head Gasket & Block Repair 32 fl oz
current price Now $43.75, Was $52.38

K&W FiberLock Head Gasket & Block Repair 32 fl oz

3.9 out of 5 Stars. 34 reviews

Radiator/Block Sealer,Lg Engine,Copper 1116-24 $13.17 Was $15.53

Radiator/Block Sealer,Lg Engine,Copper 1116-24
current price Now $13.17, Was $15.53

Radiator/Block Sealer,Lg Engine,Copper 1116-24

4.6 out of 5 Stars. 12 reviews

(2 pack) Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz From $26.27

(2 pack) Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz
Available in additional 2 options
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From$2627

(2 pack) Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz

Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems From $8.92

Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems
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From$892

Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems

4.8 out of 5 Stars. 256 reviews

Doc's Diesel Oil Friction Treatment - Diesel & Gas Engine Additive 16 oz From $39.99

Doc's Diesel Oil Friction Treatment - Diesel & Gas Engine Additive 16 oz
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Sponsored
From$3999

Doc's Diesel Oil Friction Treatment - Diesel & Gas Engine Additive 16 oz

Bar's Leaks 1334 One Seal Stop Leak Automotive Additive, 11 oz From $6.36

Bar's Leaks 1334 One Seal Stop Leak Automotive Additive, 11 oz
Available in additional 6 options
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From$636

Bar's Leaks 1334 One Seal Stop Leak Automotive Additive, 11 oz

4.4 out of 5 Stars. 678 reviews

RTV Silicone Gasket Maker Black 170g, Oil & Antifreeze Resistant Sealant for Engines, Gearboxes, Pumps, Superchargers From $10.95

RTV Silicone Gasket Maker Black 170g, Oil & Antifreeze Resistant Sealant for Engines, Gearboxes, Pumps, Superchargers
Black, variant on RTV Silicone Gasket Maker Black 170g, Oil & Antifreeze Resistant Sealant for Engines, Gearboxes, Pumps, Superchargers
Red, variant on RTV Silicone Gasket Maker Black 170g, Oil & Antifreeze Resistant Sealant for Engines, Gearboxes, Pumps, Superchargers
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From$1095

RTV Silicone Gasket Maker Black 170g, Oil & Antifreeze Resistant Sealant for Engines, Gearboxes, Pumps, Superchargers

4.7 out of 5 Stars. 15 reviews

Bar's Leaks Original Pelletized Formula Heavy-Duty Stop Leak, 11 oz $11.99

Bar's Leaks Original Pelletized Formula Heavy-Duty Stop Leak, 11 oz
current price $11.99

Bar's Leaks Original Pelletized Formula Heavy-Duty Stop Leak, 11 oz

4.3 out of 5 Stars. 93 reviews

Clearance Anckoeil Automobile and Motorcycle Products High Temperature RTV Gasket Maker and Sealan Engine Sealant RTV Engine Sealant $2.99 Was $3.80

Anckoeil Automobile and Motorcycle Products High Temperature RTV Gasket Maker and Sealan Engine Sealant RTV Engine Sealant
current price Now $2.99, Was $3.80

Anckoeil Automobile and Motorcycle Products High Temperature RTV Gasket Maker and Sealan Engine Sealant RTV Engine Sealant

Clearance Automotive Engine Sealant, Waterproof Red Silicone, 85g & 50g Set, High Temperature Resistant From $5.81

Automotive Engine Sealant, Waterproof Red Silicone, 85g & 50g Set, High Temperature Resistant
50g, variant on Automotive Engine Sealant, Waterproof Red Silicone, 85g & 50g Set, High Temperature Resistant
85g, variant on Automotive Engine Sealant, Waterproof Red Silicone, 85g & 50g Set, High Temperature Resistant
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From$581

Automotive Engine Sealant, Waterproof Red Silicone, 85g & 50g Set, High Temperature Resistant

1-Pack Professional Grade Casting Glue for Vehicles - Oil-Resistant, Vibration-Proof Bond - Fixes Cracked Engine Blocks, Exhaust Manifolds, Motorcycle Frames & Aluminum Parts $9.99

1-Pack Professional Grade Casting Glue for Vehicles - Oil-Resistant, Vibration-Proof Bond - Fixes Cracked Engine Blocks, Exhaust Manifolds, Motorcycle Frames & Aluminum Parts
current price $9.99

1-Pack Professional Grade Casting Glue for Vehicles - Oil-Resistant, Vibration-Proof Bond - Fixes Cracked Engine Blocks, Exhaust Manifolds, Motorcycle Frames & Aluminum Parts

Unbranded Engine Anti-Wear Repair Agent for DIY Mechanics & Car Owners Tool-Free Cylinder Block Restoration, Leak Sealing, Fast-Acting Engine Treatment to Stop Oil Leaks & Prolong Engine Life $36.93

Unbranded Engine Anti-Wear Repair Agent for DIY Mechanics & Car Owners Tool-Free Cylinder Block Restoration, Leak Sealing, Fast-Acting Engine Treatment to Stop Oil Leaks & Prolong Engine Life
current price $36.93

Unbranded Engine Anti-Wear Repair Agent for DIY Mechanics & Car Owners Tool-Free Cylinder Block Restoration, Leak Sealing, Fast-Acting Engine Treatment to Stop Oil Leaks & Prolong Engine Life

Clearance Bar's Leaks Oil Seal Engine Oil Burning & Leak Repair, Automotive Additive, 16.9 oz From $11.05

Bar's Leaks Oil Seal Engine Oil Burning & Leak Repair, Automotive Additive, 16.9 oz
Available in additional 5 options
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From$1105

Bar's Leaks Oil Seal Engine Oil Burning & Leak Repair, Automotive Additive, 16.9 oz

4.6 out of 5 Stars. 956 reviews

Xado Atomic Metal Conditioner Maximum with 1 Stage Revitalizant Treatment and Additive for Gasoline LPG and Diesel Engines $49.49

Xado Atomic Metal Conditioner Maximum with 1 Stage Revitalizant Treatment and Additive for Gasoline LPG and Diesel Engines
Sponsored
current price $49.49

Xado Atomic Metal Conditioner Maximum with 1 Stage Revitalizant Treatment and Additive for Gasoline LPG and Diesel Engines

4.3 out of 5 Stars. 7 reviews

Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz From $15.97

Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz
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Sponsored
From$1597

Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz

4.7 out of 5 Stars. 248 reviews

Moroso 35500 Ceramaic Engine Sealer and Water Wetter 80204 Coolant Additive $45.99 $45.99/count

Moroso 35500 Ceramaic Engine Sealer and Water Wetter 80204 Coolant Additive
current price $45.99
$45.99/count

Moroso 35500 Ceramaic Engine Sealer and Water Wetter 80204 Coolant Additive

Moroso Engine Block Filler 1 Gallon P/N 35571 $39.27

Moroso Engine Block Filler 1 Gallon P/N 35571
current price $39.27

Moroso Engine Block Filler 1 Gallon P/N 35571

5 out of 5 Stars. 1 reviews

Bar's Leaks 1000 High Mileage Engine Repair, Automotive Additive, 16.9 oz From $13.78

Bar's Leaks 1000 High Mileage Engine Repair, Automotive Additive, 16.9 oz
Available in additional 5 options
Options
From$1378

Bar's Leaks 1000 High Mileage Engine Repair, Automotive Additive, 16.9 oz

4.6 out of 5 Stars. 323 reviews

Clearance Waterproof Sealant Engine Parts Repair Adhesive Strong Bond $3.97 Was $7.97

Waterproof Sealant Engine Parts Repair Adhesive Strong Bond
current price Now $3.97, Was $7.97

Waterproof Sealant Engine Parts Repair Adhesive Strong Bond

Bar's Leaks Head Seal Blown Head Gasket Repair, Automotive Additive, 33.8 oz From $32.99

Bar's Leaks Head Seal Blown Head Gasket Repair, Automotive Additive, 33.8 oz
Available in additional 5 options
Options
From$3299

Bar's Leaks Head Seal Blown Head Gasket Repair, Automotive Additive, 33.8 oz

4.6 out of 5 Stars. 1032 reviews

Genuine Motorcraft SEALER $46.00

Genuine Motorcraft SEALER
current price $46.00

Genuine Motorcraft SEALER

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair Blue $16.99

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair Blue
current price $16.99

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair Blue

5 out of 5 Stars. 6 reviews

Lucas Oil 10278 Engine Oil Stop Leak - 1 Quart Automotive Additive From $12.32

Lucas Oil 10278 Engine Oil Stop Leak - 1 Quart Automotive Additive
Available in additional 4 options
Options
From$1232

Lucas Oil 10278 Engine Oil Stop Leak - 1 Quart Automotive Additive

4.5 out of 5 Stars. 427 reviews

XADO RED Flush Engine Oil Flush Cleaner - Removes Carbon & Sludge, Restores Oil Performance - 250 ml $29.99

XADO RED Flush Engine Oil Flush Cleaner - Removes Carbon & Sludge, Restores Oil Performance - 250 ml
Sponsored
current price $29.99

XADO RED Flush Engine Oil Flush Cleaner - Removes Carbon & Sludge, Restores Oil Performance - 250 ml

Xado 1 Stage Magnum Revitalizant 60K Treatment and Additive for Heavy Duty Diesel Engine $99.90

Xado 1 Stage Magnum Revitalizant 60K Treatment and Additive for Heavy Duty Diesel Engine
Sponsored
current price $99.90

Xado 1 Stage Magnum Revitalizant 60K Treatment and Additive for Heavy Duty Diesel Engine

K-Seal Head Gasket Repair, 16 oz Bottle, for Head Gasket, Block, and Coolant Leaks From $22.97

K-Seal Head Gasket Repair, 16 oz Bottle, for Head Gasket, Block, and Coolant Leaks
Available in additional 2 options
Options
From$2297

K-Seal Head Gasket Repair, 16 oz Bottle, for Head Gasket, Block, and Coolant Leaks

3.9 out of 5 Stars. 285 reviews

Bar's Leaks 1199 Radiator Stop Leak Automotive Additive, Vehicle Type: Universal, 11oz From $4.98

Bar's Leaks 1199 Radiator Stop Leak Automotive Additive, Vehicle Type: Universal, 11oz
Available in additional 2 options
Options
From$498

Bar's Leaks 1199 Radiator Stop Leak Automotive Additive, Vehicle Type: Universal, 11oz

4.5 out of 5 Stars. 502 reviews

Clearance! RTV Silicone Instant Gasket Maker black Hi Temperature Engine 85gTube P3S0

Clearance! RTV Silicone Instant Gasket Maker black Hi Temperature Engine 85gTube P3S0

Clearance! RTV Silicone Instant Gasket Maker black Hi Temperature Engine 85gTube P3S0

1 out of 5 Stars. 1 reviews

Hard Blok 860228, Hard Blok Water Jacket Filler - Tall Fill Performance $163.04

Hard Blok 860228, Hard Blok Water Jacket Filler - Tall Fill Performance
current price $163.04

Hard Blok 860228, Hard Blok Water Jacket Filler - Tall Fill Performance

3M Automotive 5907, Polyolefin, Adhesion Promoter Industrial Sealant, 1 lb $64.98

3M Automotive 5907, Polyolefin, Adhesion Promoter Industrial Sealant, 1 lb
current price $64.98

3M Automotive 5907, Polyolefin, Adhesion Promoter Industrial Sealant, 1 lb

Bar's Leaks Rear Main Seal Repair Additive, 16.9 oz From $9.15

Bar's Leaks Rear Main Seal Repair Additive, 16.9 oz
Available in additional 5 options
Options
From$915

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

4.7 out of 5 Stars. 1378 reviews

BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer From $19.97

BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer
Available in additional 5 options
Options
From$1997

BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer

4.1 out of 5 Stars. 261 reviews

Leak Saver LS-ULT, Multicolor Direct Inject Industrial Sealant From $46.95

Leak Saver LS-ULT, Multicolor Direct Inject Industrial Sealant
Available in additional 3 options
Options
From$4695

Leak Saver LS-ULT, Multicolor Direct Inject Industrial Sealant

3 out of 5 Stars. 2 reviews

Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 32 oz $23.73

Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 32 oz
current price $23.73

Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 32 oz

4.8 out of 5 Stars. 118 reviews

Rislone 4416 High Mileage Ring Seal Smoke Repair Automotive Additive, 16 oz From $7.24

Rislone 4416 High Mileage Ring Seal Smoke Repair Automotive Additive, 16 oz
Available in additional 5 options
Options
From$724

Rislone 4416 High Mileage Ring Seal Smoke Repair Automotive Additive, 16 oz

4.6 out of 5 Stars. 388 reviews

Bar's Leaks Cooling System Stop Leak Antifreeze and Coolant, 11 oz

Bar's Leaks Cooling System Stop Leak Antifreeze and Coolant, 11 oz

Bar's Leaks Cooling System Stop Leak Antifreeze and Coolant, 11 oz

4.5 out of 5 Stars. 66 reviews

Clearance Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 1 gal $20.34 Was $40.98

Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 1 gal
current price Now $20.34, Was $40.98

Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 1 gal

3.6 out of 5 Stars. 10 reviews

Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 oz From $9.53

Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 oz
Available in additional 2 options
Options
From$953

Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 oz

4.4 out of 5 Stars. 530 reviews

Best seller Bar's Leaks Jack Oil with Stop Leak Additive Lubricating Oil, 12.5 oz From $5.88

Bar's Leaks Jack Oil with Stop Leak Additive Lubricating Oil, 12.5 oz
Available in additional 2 options
Options
From$588

Bar's Leaks Jack Oil with Stop Leak Additive Lubricating Oil, 12.5 oz

4.8 out of 5 Stars. 2431 reviews

C&R Radiators 1000000001 Dike Radiator Stop Leak Coolant Additive $27.12

C&R Radiators 1000000001 Dike Radiator Stop Leak Coolant Additive
current price $27.12

C&R Radiators 1000000001 Dike Radiator Stop Leak Coolant Additive

4.5 out of 5 Stars. 2 reviews

Bar's Leaks 1400 High Mileage Transmission Repair, Automotive Additive, 16 oz From $12.73

Bar's Leaks 1400 High Mileage Transmission Repair, Automotive Additive, 16 oz
Available in additional 5 options
Options
From$1273

Bar's Leaks 1400 High Mileage Transmission Repair, Automotive Additive, 16 oz

4.6 out of 5 Stars. 336 reviews

35571 Engine Block Filler 1 gal. Container

35571 Engine Block Filler 1 gal. Container

35571 Engine Block Filler 1 gal. Container

Highly rated by customers

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