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Hapco

Products - Limited Slip Additive – 4 oz.

  • Based on 287 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by Amazon
Arrives Wednesday, Aug 12
Order within 13 hours and 7 seconds
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Size: Pack of 1


Features

  • Use to reduce wear, noise and chatter in differentials
  • Provides extreme pressure-wear resistance in any fluid system
  • Does not contain petroleum distillates
  • Will not harm any seals
  • Also safe for: electric motors, hydraulic pumps, moving shafts, power mowers and pillow blocks

Description

Hapco Limited Slip Additive effectively reduces wear, noise and chatter in differentials. Our formula helps provide extreme pressure-wear resistance in any fluid system. Will not harm seals and does not contain petroleum distillates. For Best Results: Add one 4 oz. bottle of Limited Slip Additive when gear oil is changed or unusual slip is detected. Drive vehicle as normal to allow circulation of fluids. Also safe for: electric motors, hydraulic pumps, moving shafts, power mowers and pillow blocks.

Manufacturer: ‎Hapco Products Co.


Brand: ‎Hapco


Item Weight: ‎4 ounces


Package Dimensions: ‎6.38 x 4.72 x 4.37 inches


Item model number: ‎5


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎4104


Date First Available: September 29, 2016


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Multi purpose
Size: Pack of 6
I used 4 bottles to help with brake chatter in backhoe brakes. It worked good enough.
Reviewed in the United States on January 6, 2026 by redmt
    • A mush have!!!
Size: Pack of 1
Great product
Reviewed in the United States on August 13, 2025 by James m simmons
    • reasonable price
Size: Pack of 2
it was a gift. it did improve the shifting.
Reviewed in the United States on October 20, 2022 by savannah
    • Limited slip additive
Size: Pack of 6
It works like it should. Nicely packaged in individual baggies.
Reviewed in the United States on April 20, 2025 by Bobby85
    • Easy to use, no mess
Size: Pack of 2
Easy to use bottles. Used 2 bottles (8 oz) for the rear differential in my 2005 F150.
Reviewed in the United States on February 20, 2025 by Austin Bloom
    • Good packaging. Seems good.
Size: Pack of 1
Used in my Ford F250 limited slip differential
Reviewed in the United States on May 16, 2024 by Mikey
    • WORKS AS DESCRIBED
Size: Pack of 6
WORKS AS DESCRIBED
Reviewed in the United States on September 2, 2024 by Romy
    • excellent
Size: Pack of 2
excellent
Reviewed in the United States on November 19, 2024 by Federico Crispino

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