Motorcycle Parts & AccessoriesAutomotive PaintAdditivesAdvance Auto Parts ShopAftermarket & Performance Wheels and RimsAntifreeze & Car CoolantsBulk Automotive FluidsCarquest Brake PartsEngine & Powertrain Replacement PartsExterior Car DetailingFarm and Agriculture Bulk BuysGaskets & Sealers on Advance Auto Parts ShopInterior Car DetailingMaintenance EquipmentReplacement Auto PartsRoad Trip Oil, Fluids & FiltersTractor FluidsTruck and Fleet Bulk Buys
Sort by|
Motorcycle Parts & AccessoriesAutomotive PaintAdditivesAdvance Auto Parts ShopAftermarket & Performance Wheels and RimsAntifreeze & Car CoolantsBulk Automotive FluidsCarquest Brake PartsEngine & Powertrain Replacement PartsExterior Car DetailingFarm and Agriculture Bulk BuysGaskets & Sealers on Advance Auto Parts ShopInterior Car DetailingMaintenance EquipmentReplacement Auto PartsRoad Trip Oil, Fluids & FiltersTractor FluidsTruck and Fleet Bulk Buys
Engine Block Sealant(53)
Uses item details. Price when purchased online
Xado Atomic Metal Conditioner Maximum with 1 Stage Revitalizant Treatment and Additive for Gasoline LPG and Diesel Engines $49.49

Sponsored
$4949
current price $49.49Xado Atomic Metal Conditioner Maximum with 1 Stage Revitalizant Treatment and Additive for Gasoline LPG and Diesel Engines
74.3 out of 5 Stars. 7 reviews
Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems From $8.92

Sponsored
From$892
Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems
2464.8 out of 5 Stars. 246 reviews
Save with
Hot Shot's Secret Stiction Eliminator Oil Treatment for Gas & Diesel Engines 16 oz. From $17.78

Sponsored
From$1778
Hot Shot's Secret Stiction Eliminator Oil Treatment for Gas & Diesel Engines 16 oz.
7844.9 out of 5 Stars. 784 reviews
Save with
XADO RED Flush Engine Oil Flush Cleaner - Removes Carbon & Sludge, Restores Oil Performance - 250 ml $29.99

Sponsored
$2999
current price $29.99XADO RED Flush Engine Oil Flush Cleaner - Removes Carbon & Sludge, Restores Oil Performance - 250 ml
Bar's Leaks Block Seal Liquid Copper Coolant Leak Fix, Antifreeze and Coolants, 18 oz From $7.97

2 options
Available in additional 2 optionsFrom$797
Bar's Leaks Block Seal Liquid Copper Coolant Leak Fix, Antifreeze and Coolants, 18 oz
5394.6 out of 5 Stars. 539 reviews
Save with
Bar's Leaks 1100 Block Seal Head Gasket Sealant Automotive Additive, 20 oz $12.99

$1299
current price $12.99Bar's Leaks 1100 Block Seal Head Gasket Sealant Automotive Additive, 20 oz
6114.7 out of 5 Stars. 611 reviews
Save with
Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz

Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz
11004.6 out of 5 Stars. 1100 reviews
Save with
(2 pack) Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz

(2 pack) Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz
Save with
K&W 401232 Permanent Head Gasket and Block Repair 32 oz For Cars, Trucks, and Other Vehicles $43.11

$4311
current price $43.11K&W 401232 Permanent Head Gasket and Block Repair 32 oz For Cars, Trucks, and Other Vehicles
224.4 out of 5 Stars. 22 reviews
Radiator/Block Sealer,Lg Engine,Copper 1116-24 $15.03

$1503
current price $15.03Radiator/Block Sealer,Lg Engine,Copper 1116-24
124.6 out of 5 Stars. 12 reviews
Save with
Hot Shot's Secret FR3 Oil Treatment for Gas & Diesel Engines 16 oz From $18.50

Sponsored
From$1850
Hot Shot's Secret FR3 Oil Treatment for Gas & Diesel Engines 16 oz
4934.9 out of 5 Stars. 493 reviews
Save with
Clearance 2Pcs Car Converter Exhaust Cleaning Liquid, Catalytic Converter Cleaner Car Cleaning Agent Remove Carbon Deposits Engine Interior Cleaning Exhaust Gas Catalysis 120ML From $7.99

Sponsored
From$799
2Pcs Car Converter Exhaust Cleaning Liquid, Catalytic Converter Cleaner Car Cleaning Agent Remove Carbon Deposits Engine Interior Cleaning Exhaust Gas Catalysis 120ML
114.2 out of 5 Stars. 11 reviews
K&W FiberLock Head Gasket & Block Repair 32 fl oz $43.31 Was $52.38

Now$4331
current price Now $43.31, Was $52.38$52.38
K&W FiberLock Head Gasket & Block Repair 32 fl oz
313.8 out of 5 Stars. 31 reviews
Save with
Bar's Leaks 1334 One Seal Stop Leak Automotive Additive, 11 oz From $5.94

6 options
Available in additional 6 optionsFrom$594
Bar's Leaks 1334 One Seal Stop Leak Automotive Additive, 11 oz
6534.4 out of 5 Stars. 653 reviews
Save with
Engine Sealant,Automotive Sealant,Extreme Temperature Resistance for Engine Gaskets, Oil Pans & Fuel System Repairs From $12.98

2 options
Available in additional 2 optionsFrom$1298
Engine Sealant,Automotive Sealant,Extreme Temperature Resistance for Engine Gaskets, Oil Pans & Fuel System Repairs
31.7 out of 5 Stars. 3 reviews
RTV Silicone Gasket Maker Black 170g, Oil & Antifreeze Resistant Sealant for Engines, Gearboxes, Pumps, Superchargers From $12.89
From$1289
RTV Silicone Gasket Maker Black 170g, Oil & Antifreeze Resistant Sealant for Engines, Gearboxes, Pumps, Superchargers
154.7 out of 5 Stars. 15 reviews
Save with
Clearance Automotive Engine Sealant, Waterproof Red Silicone, 85g & 50g Set, High Temperature Resistant From $5.81
From$581
Automotive Engine Sealant, Waterproof Red Silicone, 85g & 50g Set, High Temperature Resistant
Bar's Leaks Original Pelletized Formula Heavy-Duty Stop Leak, 11 oz $12.05

$1205
current price $12.05Bar's Leaks Original Pelletized Formula Heavy-Duty Stop Leak, 11 oz
924.3 out of 5 Stars. 92 reviews
Save with
Moroso 35500 Ceramaic Engine Sealer and Water Wetter 80204 Coolant Additive $45.99 $45.99/count

$4599
current price $45.99$45.99/count
Moroso 35500 Ceramaic Engine Sealer and Water Wetter 80204 Coolant Additive
Bar's Leaks Oil Seal Engine Oil Burning & Leak Repair, Automotive Additive, 16.9 oz From $22.28

5 options
Available in additional 5 optionsFrom$2228
Bar's Leaks Oil Seal Engine Oil Burning & Leak Repair, Automotive Additive, 16.9 oz
9304.6 out of 5 Stars. 930 reviews
Save with
Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz From $15.97

Sponsored
From$1597
Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz
2434.8 out of 5 Stars. 243 reviews
Save with
Xado 1 Stage Magnum Revitalizant 60K Treatment and Additive for Heavy Duty Diesel Engine $99.90

Sponsored
$9990
current price $99.90Xado 1 Stage Magnum Revitalizant 60K Treatment and Additive for Heavy Duty Diesel Engine
Waterproof Sealant Engine Parts Repair Adhesive Strong Bond

Waterproof Sealant Engine Parts Repair Adhesive Strong Bond
RTV Silicone Gasket Maker, High Temp Silicone Resist Oil, Anti-Freeze RTV Silicone Sealant for Engines, Gearboxes, Pumps, Superchargers (Transparent, 170g) $12.99 Was $14.99
Now$1299
current price Now $12.99, Was $14.99$14.99
RTV Silicone Gasket Maker, High Temp Silicone Resist Oil, Anti-Freeze RTV Silicone Sealant for Engines, Gearboxes, Pumps, Superchargers (Transparent, 170g)
Save with
Clearance Anckoeil Automobile and Motorcycle Products High Temperature RTV Gasket Maker and Sealan Engine Sealant RTV Engine Sealant $2.99 Was $3.80

Now$299
current price Now $2.99, Was $3.80$3.80
Anckoeil Automobile and Motorcycle Products High Temperature RTV Gasket Maker and Sealan Engine Sealant RTV Engine Sealant
Bar's Leaks 1000 High Mileage Engine Repair, Automotive Additive, 16.9 oz From $12.98

5 options
Available in additional 5 optionsFrom$1298
Bar's Leaks 1000 High Mileage Engine Repair, Automotive Additive, 16.9 oz
3084.6 out of 5 Stars. 308 reviews
Save with
Moroso Engine Block Filler 1 Gallon P/N 35571 $39.27

$3927
current price $39.27Moroso Engine Block Filler 1 Gallon P/N 35571
15 out of 5 Stars. 1 reviews
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

$999
current price $9.991-Pack Professional Grade Casting Glue for Vehicles - Oil-Resistant, Vibration-Proof Bond - Fixes Cracked Engine Blocks, Exhaust Manifolds, Motorcycle Frames & Aluminum Parts
Genuine Motorcraft SEALER $46.00

$4600
current price $46.00Genuine Motorcraft SEALER
Save with
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair Blue $16.99

$1699
current price $16.99K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair Blue
65 out of 5 Stars. 6 reviews
50+ bought since yesterday Lucas Oil Heavy Duty Oil Stabilizer for Engines, 32 oz From $14.44

Sponsored
From$1444
Lucas Oil Heavy Duty Oil Stabilizer for Engines, 32 oz
10524.8 out of 5 Stars. 1052 reviews
Save with
Mechanic in A Bottle for Gas & Diesel Fuel Systems 24 oz bottle. Fuel System Cleaner & Stabilizer for Peak Engine Performance $18.35

Sponsored
$1835
current price $18.35Mechanic in A Bottle for Gas & Diesel Fuel Systems 24 oz bottle. Fuel System Cleaner & Stabilizer for Peak Engine Performance
294.4 out of 5 Stars. 29 reviews
Bar's Leaks Head Seal Blown Head Gasket Repair, Automotive Additive, 33.8 oz From $32.99

5 options
Available in additional 5 optionsFrom$3299
Bar's Leaks Head Seal Blown Head Gasket Repair, Automotive Additive, 33.8 oz
10194.6 out of 5 Stars. 1019 reviews
Save with
Bar's Leaks 1199 Radiator Stop Leak Automotive Additive, Vehicle Type: Universal, 11oz From $4.98

2 options
Available in additional 2 optionsFrom$498
Bar's Leaks 1199 Radiator Stop Leak Automotive Additive, Vehicle Type: Universal, 11oz
4834.5 out of 5 Stars. 483 reviews
Save with
Clearance! RTV Silicone Instant Gasket Maker black Hi Temperature Engine 85gTube P3S0
Clearance! RTV Silicone Instant Gasket Maker black Hi Temperature Engine 85gTube P3S0
11 out of 5 Stars. 1 reviews
Hard Blok 860228, Hard Blok Water Jacket Filler - Tall Fill Performance $163.04

$16304
current price $163.04Hard Blok 860228, Hard Blok Water Jacket Filler - Tall Fill Performance
K-Seal Head Gasket Repair, 16 oz Bottle, for Head Gasket, Block, and Coolant Leaks From $22.97

2 options
Available in additional 2 optionsFrom$2297
K-Seal Head Gasket Repair, 16 oz Bottle, for Head Gasket, Block, and Coolant Leaks
2814 out of 5 Stars. 281 reviews
Save with
Automotive Cooling System Protectant Additive 300ml - Anti-Corrosion Anti-Scaling Sealant Fluid, Leak , Heat Dissipation Booster for Gasoline Diesel Engines

Automotive Cooling System Protectant Additive 300ml - Anti-Corrosion Anti-Scaling Sealant Fluid, Leak , Heat Dissipation Booster for Gasoline Diesel Engines
BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer From $19.97

5 options
Available in additional 5 optionsFrom$1997
BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer
2534.1 out of 5 Stars. 253 reviews
Save with
Bar's Leaks Rear Main Seal Repair Additive, 16.9 oz From $9.15

5 options
Available in additional 5 optionsFrom$915
Bar's Leaks Rear Main Seal Repair Additive, 16.9 oz
13094.7 out of 5 Stars. 1309 reviews
Save with
3M Automotive 5907, Polyolefin, Adhesion Promoter Industrial Sealant, 1 lb $64.98

$6498
current price $64.983M Automotive 5907, Polyolefin, Adhesion Promoter Industrial Sealant, 1 lb
Rislone 4416 High Mileage Ring Seal Smoke Repair Automotive Additive, 16 oz From $6.74

5 options
Available in additional 5 optionsFrom$674
Rislone 4416 High Mileage Ring Seal Smoke Repair Automotive Additive, 16 oz
3774.6 out of 5 Stars. 377 reviews
Save with
Leak Saver LS-ULT, Multicolor Direct Inject Industrial Sealant From $46.95

3 options
Available in additional 3 optionsFrom$4695
Leak Saver LS-ULT, Multicolor Direct Inject Industrial Sealant
23 out of 5 Stars. 2 reviews
Save with
Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 32 oz $23.73

$2373
current price $23.73Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 32 oz
1154.8 out of 5 Stars. 115 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
644.5 out of 5 Stars. 64 reviews
Save with
Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 1 gal $40.98

$4098
current price $40.98Bar's Leaks Hydraulic Seal Hydraulic Stop Leak & Conditioner 1 gal
103.6 out of 5 Stars. 10 reviews
Save with
C&R Radiators 1000000001 Dike Radiator Stop Leak Coolant Additive $27.12

$2712
current price $27.12C&R Radiators 1000000001 Dike Radiator Stop Leak Coolant Additive
24.5 out of 5 Stars. 2 reviews
Clearance Automotive Cooling System Protectant,High Efficiency Anti-Rust,Anti-Scaling,Sealing Leak Repair,Heat Dissipation Enhancement,All Engine Type Compatible,for Car Cooling System Daily Maintenance Was $14.99

Automotive Cooling System Protectant,High Efficiency Anti-Rust,Anti-Scaling,Sealing Leak Repair,Heat Dissipation Enhancement,All Engine Type Compatible,for Car Cooling System Daily Maintenance
Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 oz From $9.53

2 options
Available in additional 2 optionsFrom$953
Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 oz
5094.4 out of 5 Stars. 509 reviews
Save with
Bar's Leaks Jack Oil with Stop Leak Additive Lubricating Oil, 12.5 oz From $5.88

2 options
Available in additional 2 optionsFrom$588
Bar's Leaks Jack Oil with Stop Leak Additive Lubricating Oil, 12.5 oz
22754.8 out of 5 Stars. 2275 reviews
Save with
Popular in Engine Block Sealant
Related Products
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair Blue
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair Blue$16.99current price $16.99Bar's Products-Bar's Leaks 1194 Grey Radiator Stop Leak - 6 oz. -2 Pack
Bar's Products-Bar's Leaks 1194 Grey Radiator Stop Leak - 6 oz. -2 Pack$19.47current price $19.47ThGooriLy ST5501 Multi-Purpose Leak Repair, Stops Radiator & Head Gasket Leaks Coolant, 8 oz Bottle
ThGooriLy ST5501 Multi-Purpose Leak Repair, Stops Radiator & Head Gasket Leaks Coolant, 8 oz Bottle$15.49current price $15.49Injector,Filler Tube Car 2 Ounce 1/4 Oil Dye Tool R12 R134a R22 Tool 2 Ounce Car Oil Dye Oil Coolant Filler Dye Tool 2 Pure Liquid Oil R22 Air Car 1/4 Pure Liquid Ories Yorten Multicolor
Injector,Filler Tube Car 2 Ounce 1/4 Oil Dye Tool R12 R134a R22 Tool 2 Ounce Car Oil Dye Oil Coolant Filler Dye Tool 2 Pure Liquid Oil R22 Air Car 1/4 Pure Liquid Ories Yorten Multicolor$18.49current price $18.49Bars Leaks 01194 6 Oz Radiator Stop Leak Concentrate
Bars Leaks 01194 6 Oz Radiator Stop Leak Concentrate$13.00current price $13.00Red Line RL-2 Diesel Additive - 15oz. - 70303
Red Line RL-2 Diesel Additive - 15oz. - 70303$203.88current price $203.88Bars Products Bar's Leaks 1194 Grey Radiator Stop Leak - 6 oz. 12 — Standard Mounting Hardware, Drop-In Replacement
Bars Products Bar's Leaks 1194 Grey Radiator Stop Leak - 6 oz. 12 — Standard Mounting Hardware, Drop-In Replacement$73.75current price $73.75Nitro Lubricants Carb & Choke Cleaner - 12oz Sensor Safe, Fast Clean (4-Pack)
Nitro Lubricants Carb & Choke Cleaner - 12oz Sensor Safe, Fast Clean (4-Pack)$41.99current price $41.99Supercool Cooling System Stop Leak,Grease 39241B-YF
Supercool Cooling System Stop Leak,Grease 39241B-YF$27.95current price $27.95U-View Detergent Concentrated Fuel Cleaner
U-View Detergent Concentrated Fuel Cleaner$29.50current price $29.50Motor Medic Oil Stop Leak,12 oz. Size,Amber M2112
Motor Medic Oil Stop Leak,12 oz. Size,Amber M2112$10.77current price $10.77Hi-Gear LEAKS NO MORE 444ml Can Engine Oil Stop Leak
Hi-Gear LEAKS NO MORE 444ml Can Engine Oil Stop Leak$18.99current price $18.99Leak Saver Direct Inject Acid Scavenger - Converts Acid to Synthetic Oil, for A/C Systems Up to 5 Tons - Made in The USA
Leak Saver Direct Inject Acid Scavenger - Converts Acid to Synthetic Oil, for A/C Systems Up to 5 Tons - Made in The USA$36.95current price $36.95




