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Engine Block Sealant(74)
Uses item details. Price when purchased online
BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer From $19.97

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From$1997
BlueDevil Oil Stop Leak 8 oz - Permanent Engine Oil Leak Sealer
2144.1 out of 5 Stars. 214 reviews
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Bar's Leaks 1000 High Mileage Engine Repair, Automotive Additive, 16.9 oz From $12.98

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From$1298
Bar's Leaks 1000 High Mileage Engine Repair, Automotive Additive, 16.9 oz
2624.7 out of 5 Stars. 262 reviews
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Bar's Leaks 1199 Radiator Stop Leak Automotive Additive, Vehicle Type: Universal, 11oz From $4.98

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From$498
Bar's Leaks 1199 Radiator Stop Leak Automotive Additive, Vehicle Type: Universal, 11oz
3924.4 out of 5 Stars. 392 reviews
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Bar's Leaks 1400 High Mileage Transmission Repair, Automotive Additive, 16 oz From $11.98

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From$1198
Bar's Leaks 1400 High Mileage Transmission Repair, Automotive Additive, 16 oz
2714.6 out of 5 Stars. 271 reviews
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Bar's Leaks 1100 Block Seal Head Gasket Sealant Automotive Additive, 20 oz $21.58

$2158
current price $21.58Bar's Leaks 1100 Block Seal Head Gasket Sealant Automotive Additive, 20 oz
4974.7 out of 5 Stars. 497 reviews
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Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz

Bar's Leaks Block Seal Head Gasket Fix Automotive Additive 24 oz
11964.6 out of 5 Stars. 1196 reviews
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BlueDevil Radiator & Block Sealer $23.86 $1.49/oz

$2386
current price $23.86$1.49/oz
BlueDevil Radiator & Block Sealer
264.4 out of 5 Stars. 26 reviews
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
4514.6 out of 5 Stars. 451 reviews
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RTV Silicone Gasket Maker, High Temp Silicone Resist Oil, Anti-Freeze RTV Silicone Sealant for Engines, Gearboxes, Pumps, Superchargers (Red, 170g) From $12.59
From$1259
RTV Silicone Gasket Maker, High Temp Silicone Resist Oil, Anti-Freeze RTV Silicone Sealant for Engines, Gearboxes, Pumps, Superchargers (Red, 170g)
45 out of 5 Stars. 4 reviews
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(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
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Bar's Leaks Head Seal Blown Head Gasket Repair, Automotive Additive, 33.8 oz From $32.99

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From$3299
Bar's Leaks Head Seal Blown Head Gasket Repair, Automotive Additive, 33.8 oz
8574.6 out of 5 Stars. 857 reviews
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In 25+ people's carts TruFuel 50:1 2-Cycle Engines, Liquid Fuels, 1.93 lbs, 32 oz. (1 Pack) From $6.98

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From$698
TruFuel 50:1 2-Cycle Engines, Liquid Fuels, 1.93 lbs, 32 oz. (1 Pack)
5464.7 out of 5 Stars. 546 reviews
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Blue Magic Radiator/Block Sealer,Lg Engine,Copper 1116-24 $14.31

$1431
current price $14.31Blue Magic Radiator/Block Sealer,Lg Engine,Copper 1116-24
124.6 out of 5 Stars. 12 reviews
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K&W FiberLock Head Gasket & Block Repair 32 fl oz $42.97

$4297
current price $42.97K&W FiberLock Head Gasket & Block Repair 32 fl oz
214.4 out of 5 Stars. 21 reviews
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ACDelco Engine Sealant Automotive Specialty Parts $18.32 Was $20.44

Now$1832
current price Now $18.32, Was $20.44$20.44
ACDelco Engine Sealant Automotive Specialty Parts
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BLOCK SEAL LIQUID 15 OZ. $189.13

$18913
current price $189.13BLOCK SEAL LIQUID 15 OZ.
K&W 401232 Permanent Head Gasket and Block Repair 32 oz For Cars, Trucks, and Other Vehicles $34.32 Was $39.05

Now$3432
current price Now $34.32, Was $39.05$39.05
K&W 401232 Permanent Head Gasket and Block Repair 32 oz For Cars, Trucks, and Other Vehicles
164.3 out of 5 Stars. 16 reviews
CRC 4012246 Fiberlock Head Gasket And Block Repair - 32 Fl. Oz. $42.99 Was $52.38

Now$4299
current price Now $42.99, Was $52.38$52.38
CRC 4012246 Fiberlock Head Gasket And Block Repair - 32 Fl. Oz.
Clearance High Temperature RTV Gasket Maker, Engine Sealant, RTV Silicone Sealant for Automotive Repairs, Gasket Sealer for Engines, 100ml $5.67 Was $6.31
Now$567
current price Now $5.67, Was $6.31$6.31
High Temperature RTV Gasket Maker, Engine Sealant, RTV Silicone Sealant for Automotive Repairs, Gasket Sealer for Engines, 100ml
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
5374.4 out of 5 Stars. 537 reviews
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Hot Shot's Secret FR3 Oil Treatment for Gas & Diesel Engines 16 oz From $15.81

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From$1581
Hot Shot's Secret FR3 Oil Treatment for Gas & Diesel Engines 16 oz
4854.9 out of 5 Stars. 485 reviews
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Hot Shot's Secret Stiction Eliminator Oil Treatment for Gas & Diesel Engines 16 oz. From $17.33

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From$1733
Hot Shot's Secret Stiction Eliminator Oil Treatment for Gas & Diesel Engines 16 oz.
7634.9 out of 5 Stars. 763 reviews
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Clearance! RTV Silicone Instant Gasket Maker black Hi Temperature Engine 85gTube P3S0 From $7.58
From$758
Clearance! RTV Silicone Instant Gasket Maker black Hi Temperature Engine 85gTube P3S0
11 out of 5 Stars. 1 reviews
Anckoeil Automobile and Motorcycle Products High Temperature RTV Gasket Maker and Sealan Engine Sealant RTV Engine Sealant $3.80

$380
current price $3.80Anckoeil Automobile and Motorcycle Products High Temperature RTV Gasket Maker and Sealan Engine Sealant RTV Engine Sealant
sdhkgrrt under $5 Engine Sealant, Engine Sealant, Waterproof High Temperature Adhesive, Strong Bonding Repair Agent, Automotive Gasket Maker, Engine Part Sealant, DIY Repair Sealant

sdhkgrrt under $5 Engine Sealant, Engine Sealant, Waterproof High Temperature Adhesive, Strong Bonding Repair Agent, Automotive Gasket Maker, Engine Part Sealant, DIY Repair Sealant
35570 Engine Block Filler - 4 gal. $109.22

$10922
current price $109.2235570 Engine Block Filler - 4 gal.
K-Seal Multi Purpose One Step Pour and Go Permanent Coolant Leak Repair ST5501 Automotive Additive 8oz Bottle From $12.47

3 options
Available in additional 3 optionsFrom$1247
K-Seal Multi Purpose One Step Pour and Go Permanent Coolant Leak Repair ST5501 Automotive Additive 8oz Bottle
7814.2 out of 5 Stars. 781 reviews
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Hard Blok 860212 Engine Block Filler - Short Fill - 6.25 lbs Bags $126.85

$12685
current price $126.85Hard Blok 860212 Engine Block Filler - Short Fill - 6.25 lbs Bags
CQCYD under $5 Engine Sealant, High Temperature RTV Sealant, Engine Gasket Maker Sealant, Blue Automotive Engine Sealant, Metal Gasket Sealant Adhesive, 50ml Engine Repair Sealant $6.99

$699
current price $6.99CQCYD under $5 Engine Sealant, High Temperature RTV Sealant, Engine Gasket Maker Sealant, Blue Automotive Engine Sealant, Metal Gasket Sealant Adhesive, 50ml Engine Repair Sealant
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
50+ bought since yesterday Lucas Oil Heavy Duty Oil Stabilizer for Engines, 32 oz From $14.44

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From$1444
Lucas Oil Heavy Duty Oil Stabilizer for Engines, 32 oz
8764.8 out of 5 Stars. 876 reviews
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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
144.1 out of 5 Stars. 14 reviews
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
2624.7 out of 5 Stars. 262 reviews
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Moroso 35500 Ceramaic Engine Sealer and Water Wetter 80204 Coolant Additive $44.46 $44.46/count

$4446
current price $44.46$44.46/count
Moroso 35500 Ceramaic Engine Sealer and Water Wetter 80204 Coolant Additive
Niteo Motor Medic C312 Radiator Sealer and Stop Leak - 11 oz. One Each, 11 oz. $12.99

$1299
current price $12.99Niteo Motor Medic C312 Radiator Sealer and Stop Leak - 11 oz. One Each, 11 oz.
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
Bar's Leaks Original Pelletized Formula Heavy-Duty Stop Leak, 11 oz $11.80

$1180
current price $11.80Bar's Leaks Original Pelletized Formula Heavy-Duty Stop Leak, 11 oz
924.3 out of 5 Stars. 92 reviews
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K-Seal Head Gasket Repair, 16 oz bottle, Sold by Bottle From $22.97

2 options
Available in additional 2 optionsFrom$2297
K-Seal Head Gasket Repair, 16 oz bottle, Sold by Bottle
2593.9 out of 5 Stars. 259 reviews
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Bar's Leaks Oil Seal Engine Oil Burning & Leak Repair, Automotive Additive, 16.9 oz

5 options
Available in additional 5 optionsBar's Leaks Oil Seal Engine Oil Burning & Leak Repair, Automotive Additive, 16.9 oz
8104.6 out of 5 Stars. 810 reviews
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BlueDevil Rear Main Sealer, 8 oz Bottle

BlueDevil Rear Main Sealer, 8 oz Bottle
1294.1 out of 5 Stars. 129 reviews
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Genuine Motorcraft SEALER $46.00

$4600
current price $46.00Genuine Motorcraft SEALER
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Hard Blok 860228, Hard Blok Water Jacket Filler - Tall Fill Performance $158.11

$15811
current price $158.11Hard Blok 860228, Hard Blok Water Jacket Filler - Tall Fill Performance
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
8574.6 out of 5 Stars. 857 reviews
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SolderSeal MSUV16 $16.49

$1649
current price $16.49SolderSeal MSUV16
Permatex 30301 Radiator Repair - Stop Leak, 16 fl oz, Protecting Against Coolant Loss, Stopping Leaks and Seepage from Head Gaskets From $14.00

5 options
Available in additional 5 optionsFrom$1400
Permatex 30301 Radiator Repair - Stop Leak, 16 fl oz, Protecting Against Coolant Loss, Stopping Leaks and Seepage from Head Gaskets
43.8 out of 5 Stars. 4 reviews
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Best seller Bar's Leaks Liquid Aluminum Radiator & Heater Core Stop Leak Antifreeze & Coolant, 16.9 oz From $8.48

4 options
Available in additional 4 optionsFrom$848
Bar's Leaks Liquid Aluminum Radiator & Heater Core Stop Leak Antifreeze & Coolant, 16.9 oz
4294.6 out of 5 Stars. 429 reviews
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Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 oz From $8.97

2 options
Available in additional 2 optionsFrom$897
Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 oz
4084.4 out of 5 Stars. 408 reviews
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K-Seal ST5516 Permanent Coolant Leak Repair 16oz. $24.99

$2499
current price $24.99K-Seal ST5516 Permanent Coolant Leak Repair 16oz.
43.3 out of 5 Stars. 4 reviews
K-Seal Heavy Duty ST5516 Antifreeze & Coolant Stop Leak 16oz Bottle Treats Large Trucks, RVs, Bus and Tractors $19.93 $1.25/fl oz

$1993
current price $19.93$1.25/fl oz
K-Seal Heavy Duty ST5516 Antifreeze & Coolant Stop Leak 16oz Bottle Treats Large Trucks, RVs, Bus and Tractors
454 out of 5 Stars. 45 reviews
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3Pcs Car Radiator Stop Leak Powder 15ml! Vacemry Water Tank Leak Repair Additive for Engine Cooling System, Radiator Leak Sealer for Cars and Trucks $10.99

$1099
current price $10.993Pcs Car Radiator Stop Leak Powder 15ml! Vacemry Water Tank Leak Repair Additive for Engine Cooling System, Radiator Leak Sealer for Cars and Trucks
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