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Hapco-Products

Hapco-Products

7.7K items sold
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Featured items

  • Pro-Seal - ENGINE OIL STOP LEAK - GUARANTEED OR YOUR MONEY BACK!

    $31.99Save up to 40% when you buy more

  • Pro-Seal - POWER STEERING STOP LEAK - GUARANTEED OR YOUR MONEY BACK!

    $31.99Save up to 40% when you buy more

  • Pro-Seal - TRANSMISSION STOP LEAK - GUARANTEED OR YOUR MONEY BACK!

    $31.99Save up to 40% when you buy more

  • Pro-Seal Concentrated Stop Leak - STOPS LEAKS IN ANY HYDRAULIC FLUID SYSTEM

    $31.99Save up to 40% when you buy more

All items

Pro-Seal - TRANSMISSION STOP LEAK - GUARANTEED OR YOUR MONEY BACK!

$31.99Save up to 40% when you buy more

HAPCO - 16 oz. Lead Substitute Fuel Additive - 2 PACK

$35.98Save up to 40% when you buy more

HAPCO - 32 oz. Lead Substitute Fuel Additive - TREATS UP TO 50 GALLONS

$34.99Save up to 40% when you buy more

HAPCO - Tri-Seal - GUARANTEED TO STOP OIL LEAKS - BEST SELLER!

$34.99Save up to 40% when you buy more

Hapco Products - PERMANENT HEAD GASKET REPAIR - GUARANTEED OR YOUR MONEY BACK!

$39.99Save up to 40% when you buy more

Pro-Seal - GUARANTEED TO STOP LEAKS IN ANY FLUID SYSTEM - 2 PACK

$47.98Save up to 40% when you buy more

HAPCO - SlipCoat Anti-Wear Oil Additive - EXTEND ENGINE LIFE!

$24.99Save up to 40% when you buy more

HAPCO - 1 Gallon Lead Substitute Fuel Additive - TREATS UP TO 200 GALLONS

$78.49Save up to 20% when you buy more

Hapco Products - Heavy Duty Block Sealer - PERMANENT BLOCK REPAIR. EASY TO USE.

$34.99

HAPCO - Main Sta - STOPS OIL LEAKS IN ANY ENGINE. WORKS AS YOU DRIVE!

$39.99Save up to 40% when you buy more

HAPCO - Heavy Duty Block Sealer - PERMANENT BLOCK REPAIR - EASY TO USE - 2 PACK

$59.98Save up to 40% when you buy more

Limited Slip Additive - REDUCES WEAR & NOISE IN DIFFERENTIALS - 2 PACK

$27.98

Hapco Products - Tri-Seal - GUARANTEED TO STOP OIL LEAKS - BEST SELLER! - 2 PACK

$59.98Save up to 40% when you buy more

SlipCoat - INCREASE OIL PRESSURE - ENGINE OIL ADDITIVE - PACK OF 2

$39.98Save up to 40% when you buy more

Hapco Products - Limited Slip Additive - REDUCES WEAR & NOISE IN DIFFERENTIALS

$18.99Save up to 40% when you buy more

PERMANENT HEAD GASKET REPAIR - GUARANTEED OR YOUR MONEY BACK! - 2 PACK

$69.98

Hapco Products - Slick Shift Transmission Fix - RESTORES SMOOTH SHIFTING

$34.99

HAPCO - Main Sta - Guaranteed to Stop Engine Oil Leaks - 2 PACK

$69.98Save up to 40% when you buy more

HAPCO - Rack and Pinion Formula - EASES POWER STEERING STIFFNESS INSTANTLY

$19.99Save up to 40% when you buy more

Power Steering & Transmission Stop Leak - MADE IN MICHIGAN SINCE 1960

$29.99

Hapco Products - 16 oz. Lead Substitute - TREATS UP TO 25 GALLONS

$18.99Save up to 40% when you buy more

HAPCO - Rack & Pinion Formula - EASES POWER STEERING STIFFNESS INSTANTLY 2 PACK

$29.98

HAPCO - Premium Hydraulic Oil - PROVIDES LONG LASTING LUBRICATION - 2 PACK

$39.98Save up to 40% when you buy more

Hapco Products - Fast Motor Flush - EASILY AND THOROUGHLY CLEANS ENGINES

$29.99

HAPCO - Slick Shift Transmission Fix - RESTORE SMOOTH SHIFTING - 2 PACK

$59.98

Hapco Products - 32 oz. Lead Substitute - PACK OF 2

$59.98Save up to 20% when you buy more

HAPCO - Power Steering & Transmission Sealer - MAKES A PERMANENT SEAL - 2 PACK

$49.98

Hapco Products - Fuel Injector Cleaner - LUBRICATES INJECTOR PUMP INSTANTLY!

$27.49

HAPCO - 1 Gallon Premium Hydraulic Oil - PROVIDES LONG LASTING LUBRICATION!

$59.99Save up to 20% when you buy more

Hapco Products - CARBURETOR & THROTTLE BODY CLEANER - ALL IN 1

$31.49Save up to 40% when you buy more

1 Quart Heavy Duty Power Steering Fluid - HIGH PERFORMANCE - 2 PACK

$34.98Save up to 40% when you buy more

SlipCoat Anti-Wear Oil Additive - ENGINE OIL ADDITIVE - 1 GALLON

$99.99Save up to 20% when you buy more

Assembly Fluid - COMPATIBLE WITH ALL OILS. NON-CLOGGING.

$19.49Save up to 40% when you buy more

HAPCO - 16 oz. Lead Substitute Fuel Additive - CASE OF 12

$119.99Save up to 20% when you buy more

Vinyl & Upholstery Cleaner - CLEANS DIRT, GREASE AND OIL FAST

$30.99

HAPCO PRODUCTS - Assembly Fluid - COMPATIBLE WITH ALL OILS - 2 PACK

$28.98

SlipCoat - ENGINE OIL ADDITIVE - CASE OF 12

$149.99Save up to 20% when you buy more

HAPCO - 32 oz. Lead Substitute Fuel Additive - CASE OF 6

$109.99Save up to 20% when you buy more

Fast Motor Flush - EASILY AND THOROUGHLY CLEANS ENGINES - 2 PACK

$49.98

HAPCO - Octane Booster - IMPROVES POWER & ACCELERATION - CASE OF 10

$149.99Save up to 20% when you buy more

HAPCO - Fuel System Cleaner - WORKS IN ANY FUEL SYSTEM - 2 PACK

$54.98

Fuel Injector Cleaner - LUBRICATES INJECTOR PUMP INSTANTLY! - 2 PACK

$44.98

Hapco Products - Engine Concentrate & Fuel Treatment - MULTI SYSTEM ADDITIVE

$24.99

Hapco Products - 1 Gallon Heavy Duty Power Steering Fluid - HIGH PERFORMANCE

$44.99Save up to 20% when you buy more

HAPCO - 1 Quart - Power Steering Fluid

$24.99Save up to 40% when you buy more

HAPCO - Vinyl & Upholstery Cleaner - CLEANS DIRT, GREASE AND OIL FAST - 2 PACK

$51.98

Hapco Products -1 Quart Hydraulic Oil - PROVIDES LONG LASTING LUBRICATION

$29.49Save up to 40% when you buy more

Hapco Products - Fuel System Cleaner - WORKS IN ANY FUEL SYSTEM

$32.49
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About us

Since 1960, our team at Hapco Products has been dedicated to making high quality automotive additives, sealants & lubricants that people know and trust. Made in Michigan. Visit www.hapcoproducts.com to learn more!
Location: United StatesMember since: Aug 26, 2016Seller: hapco-products
Top Rated SellerHapco-Products is one of eBay's most reputable sellers. Consistently delivers outstanding customer service Learn more

Feedback ratings

Last 12 months

Positive235- positive feedback in last 12 months
Neutral5- neutral feedback in last 12 months
Negative9- negative feedback in last 12 months

Detailed seller ratings

Average for the last 12 months

Accurate description
4.8
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (2,219)

5***9 (756)- Feedback left by buyer.
Past 6 months
Verified purchase
Just as described. Great seller, great product at an outstanding price!! Thanks!
w***5 (1501)- Feedback left by buyer.
Past 6 months
Verified purchase
greateBayer--product as described and quick ship
n***n (1589)- Feedback left by buyer.
Past 6 months
Verified purchase
Well packed and prompt delivery!
0***1 (57)- Feedback left by buyer.
Past 6 months
Verified purchase
Delivered in a timely manner, well packed
l***u (827)- Feedback left by buyer.
Past 6 months
Verified purchase
fast shipper, haven't installed yet to see effects, hope it works as stated
m***d (1800)- Feedback left by buyer.
Past 6 months
Verified purchase
Excellent seller Quick shipping Thank You A++
See all feedback