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30% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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Receive Up To 30% Off Your Online Purchase Of Select Parts And Accessories
Use promotional code MMJ30 at checkout to receive 30% off the following categories: Select Brake Parts, Select Hi-Performance and Truck Accessories, Batteries, Paint, Splash Guards, Select Ventvisors & Bug Shields, Springs & Spacers, Water Pumps, Belts, A/C Parts, Starters, Alternators, Fuel Pumps, Radiators, Radiator Fans, Thermostats, Caps & Clamps, Clutches, Spark Plugs, Plug Wires, CV Axles, Battery Chargers & Booster Cables, OE Locks, Rack & Pinons, Window Motors, RainX Wipers, Appearance Chemicals, Floor Mats, Lift Equipment, Hand Tools, Travel Accessories, Car Covers, Seat Covers, Wheel Covers, Body Repair, Collectibles and Apparel.

Use promotional code MMJ20 at checkout to receive 20% off the following categories: Ignition, Shocks & Struts, Chassis, Jumpstarts, Air Filters, Oil Filters, Bearings & Seals, Engine Parts, Wash Accessories, Outdoor Lifestyle, Towing, Mini Air Compressors, Tire Repair Accessories, Mufflers, Grease/Oil, Additive Chemicals, P/S Pumps, Cooling Product, Timing Belts, Specialty Tools, Radiator Hose, Motor Mounts, Mirrors, Lug Nuts, Sealants/Adhesives, Fuel Filters, P/S Hoses, Gas Cans, Oil Change Accessories, Help, Wiper Motors, Loaner Tools, Air Compressors, Horns, Books, Distributors, Sun Control and Exhaust Adapters.

Use promotional code MMJ15 at checkout to receive 15% off the following categories: Test Equipment, Power Tools, Emergency Supplies, Electronics and Stereo & Accessories (MAP pricing Exclusions).

Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes the following brands: WeatherTech, Champion, Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner, Philips and BBK Performance. Valid online until 11:59 PM EST on 11/22/17.

Receive 10% Off Wagner branded brake parts with your online purchase. Use promotional code: WAGNER10.

Receive 20% Off Select Champion branded products with your online purchase. Use promotional code: CHAMP20.

Receive 10% Off Select FelPro branded products with your online purchase. Use promotional code: FELPRO10.


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Cooling System Chemicals

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$2.99
$2.39
With Promotion
  • Part #: G12BP|
  • SKU: 8985970

Available today

Pay in Store Available

    • Works with all types and colors of antifreeze coolant and/or water
    • Seals leaks and seepage
Retail
$2.99
$2.99
$2.39
With Promotion
  • Part #: ASBP|
  • SKU: 1064603

Available today

Pay in Store Available

    • Stops Radiator and Heater Cores Leaks Safely, Quickly and Easily
    • Compatible with ALL antifreeze and coolants
Retail
$2.99
$3.99
$3.19
With Promotion
Play
  • Part #: 1196|
  • SKU: 555355

Available today

Pay in Store Available

    • Works with all types and colors of antifreeze coolant and/or water
    • Stops leaks and seals in all minor cooling system leaks
Retail
$3.99
$4.99
$3.99
With Promotion
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  • Part #: PLT11|
  • SKU: 9284432

Available today

Pay in Store Available

    • Inhibits rust and corrosion
    • Lubricates water pump seal
Retail
$4.99
$5.49
$4.39
With Promotion
  • Part #: AS105Y|
  • SKU: 1054473

Available today

Pay in Store Available

    • Helps remove rust deposits and oily residues
    • One step process
Retail
$5.49
$5.99
$4.79
With Promotion
  • Part #: PKF0AE|
  • SKU: 1180282

Available today

Pay in Store Available

    • Two Products In One
    • Combo Cleaner And Flush Removes Tough Cooling System Deposits In One Step
Retail
$5.99
$5.99
$4.79
With Promotion
  • Part #: 1008|
  • SKU: 8985875

Available today

Pay in Store Available

    • Permanent cooling system sealer
    • Forms permanent copper-ceramic seal
Retail
$5.99
$5.99
$4.79
With Promotion
  • Part #: AS120Y|
  • SKU: 1137983

Available today

Pay in Store Available

    • Special formula helps seal larger size leaks
    • Heavy duty formula
Retail
$5.99
$6.39
$5.11
With Promotion
  • Part #: ASLC16|
  • SKU: 8379719

Available today

Pay in Store Available

    • Stops Radiator Leaks Safely, Quickly and Easily
    • Compatible with ALL antifreeze and coolants
Retail
$6.39
$7.99
$6.39
With Promotion
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  • Part #: 1186|
  • SKU: 11240

Available today

Pay in Store Available

    • Formulated with Xtreme Cool, which stops overheating and reduces water temperature
    • Guaranteed to safely seal leaks in plastic, aluminum and metal radiators, heater cores, gaskets and freeze plugs. It's one of the few products to meet ASTM D6107 requirements for Stop Leak Additives used in Engine Coolants
Retail
$7.99
$7.99
$6.39
With Promotion
  • Part #: 1116|
  • SKU: 9292992

Available today

Pay in Store Available

    • Permanent cooling system sealer
    • Forms permanent copper-ceramic seal
Retail
$7.99
$8.49
$6.79
With Promotion
  • Part #: 01650|
  • SKU: 1783171

Available today

Pay in Store Available

    • Optimizes cooling efficiency and prevents overheating
    • Cleans radiator and entire cooling system
Retail
$8.49
$8.99
$7.19
With Promotion
  • Part #: 401016|
  • SKU: 34454

Available today

Pay in Store Available

    • Forms a permanent molecular bond that's as strong as steel
    • Seals cracks and holes in cast iron and aluminum engine blocks, head gaskets, freeze plugs, and copper, aluminum and bi-material radiators and heater cores
Retail
$8.99
$9.99
$7.99
With Promotion
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  • Part #: 1109|
  • SKU: 11226

Available today

Pay in Store Available

    • Permanently repairs leaks in gaskets, radiators, heater cores, intake manifolds, blocks, heads, and freeze plugs
    • Contains advanced microscopic stop leak fibers, which lock together to increase strength and promote a permanent seal, but will not clog your engine components
Retail
$9.99
$9.99
$7.99
With Promotion
  • Part #: AS660|
  • SKU: 1773189

Available today

Pay in Store Available

    • Fast acting beads quickly locate leaks
    • Kevlar resin binds to metal
Retail
$9.99
$9.99
$7.99
With Promotion
  • Part #: 80204|
  • SKU: 8466749

Available today

Pay in Store Available

    • Decreases engine temperature by up to 30 degrees
    • Designed for modern aluminum, cast iron, copper, brass and bronze systems
Retail
$9.99
$10.99
$8.79
With Promotion
  • Part #: 12600|
  • SKU: 9334522

Available today

Pay in Store Available

    • Reduces surface tension of water/ coolant enable greater heat transfer
    • Prevents erosion and electrolysis
Retail
$10.99
$11.99
$9.59
With Promotion
  • Part #: 1100|
  • SKU: 9284456

Available today

Pay in Store Available

    • For most vehicles, this is the last stop before going to a junkyard or paying an expensive repair bill for a blown head gasket
    • Designed to stop leaks, seal cracked cylinder heads and repair blown gaskets
Retail
$11.99
$13.99
$11.19
With Promotion
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  • Part #: 10640|
  • SKU: 412689

Available today

Pay in Store Available

    • Super Coolant is designed to lower coolant temperatures in HP and Race applications by as much as 20 Degrees F.
    • Prevents deposits from building in the cooling system.
Retail
$13.99
$19.99
$15.99
With Promotion
  • Part #: AS663|
  • SKU: 1773208

Available today

Pay in Store Available

    • Fast acting beads quickly locate leaks
    • Kevlar resin binds to metal
Retail
$19.99
$21.99
$17.59
With Promotion
  • Part #: 401232|
  • SKU: 9663572

Available today

Pay in Store Available

    • Permanently repairs head gaskets, engine blocks, cooling systems, cylinder heads and radiators
    • Nanotechnology reinforced with military-strength fibers for a superior permanent repair
Retail
$21.99
$32.99
$26.39
With Promotion
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  • Part #: 1111|
  • SKU: 9836116

Available today

Pay in Store Available

    • Formulated with a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles
    • Sealing particles penetrate gaps and cracks and harden to permanently stop leaks
Retail
$32.99
$35.99
$28.79
With Promotion
Play
  • Part #: 401224-6|
  • SKU: 674940

Available today

Pay in Store Available

    • Pour and go permanent head gasket and block repair.
    • Cooling System Repair
Retail
$35.99
$36.99
$29.59
With Promotion
Play
  • Part #: 00209|
  • SKU: 670324

Available today

Pay in Store Available

    • Easy to use pour-n-go
    • No flush of thermostat removal required
Retail
$36.99
$3.49
$2.90
Sale
Price
$2.32
With Promotion
  • Part #: PKFOAF|
  • SKU: 8068880

Available tomorrow after 12 p.m.


    • Helps Stop Leaks In Auto Radiators, Heater Cores, Water Pumps And Hose Connections
    • Helps Prevent Coolant Seepage
Sale Price
$3.49
$2.90
$10.99
$5.90
Sale
Price
$4.72
With Promotion
  • Part #: 040206|
  • SKU: 220657

Available tomorrow after 12 p.m.


    • Save your engine from excessive wear in cold climates with Heater Hotter's exclusive formula.
    • Improve your engine warm-up time by 50 percent even in sub-zero temperatures.
Sale Price
$10.99
$5.90
$10.99
$5.90
Sale
Price
$4.72
With Promotion
  • Part #: 040204|
  • SKU: 9969876

Available tomorrow after 12 p.m.


    • Reduce engine opereating temperature by 30 degrees with our proven formula.
    • Prevent corrosion with a new formula that reduces mineral deposits.
Sale Price
$10.99
$5.90
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