Transmission stop leak products are essential for maintaining the health of your vehicle's transmission system, especially as they can help prevent costly repairs. In 2025, the market offers a variety of effective solutions designed to seal leaks and restore the performance of your transmission fluid. These products not only help to stop leaks but also improve shifting and extend the life of your transmission. Whether you're dealing with minor drips or more significant leaks, choosing the right transmission stop leak can make a significant difference in your vehicle's longevity and performance.
SALE
−$1.10
Bar's Leaks 1420 Transmission Stop Leak - 11 oz. , Grey
- Stops and seals transmission fluid leaks
- Works with all types of transmission fluids
- Restores gasket and seals to stop transmission fluid leaks
- item package weight: 0.81 pounds
$6.89
SALE
−$1.00
Lucas Oil 10009 Transmission Fix - 24 Ounce, White
- The #1 transmission problem solving additive
- Contains no solvents
- Can be added to existing fluid without draining any out
- Effective in an extremely high percentage of cases
- Extends needed protection to planetary gears
$12.99
SALE
−$1.43
Bar's Leaks High Mileage Transmission Repair-It, 16.9 Fl Oz
- STOPS LEAKS, SLIPPING AND ROUGH SHIFTING: Reduces rough shifting and friction, while eliminating slip, controlling temperature, and repairing shudder, chatter and whining.
- RESTORES PERFORMANCE: Premium high mileage formula restores transmission performance and saves on costly transmission / transaxle repairs.
- FLUID STABILIZER: Use when topping off existing fluid when low, or add a bottle when changing the fluid.
- SEALS CONDITIONERS: Stops leaks, slipping and rough shifting. Reduces heat & friction, and stabilizes fluid.
- REPAIR IT: Transmission Repair-It works with all types of transmission fluids
$11.56
SALE
−$8.81
ATP Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle
- Professional strength fast acting resealer, stops leaks fast
- Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
- Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
- Does not contain petroleum distillates, will not over-swell or breakdown seals
- 8oz bottle will treat a 6 quart capacity, adjust accordingly
$14.92
SALE
−$5.78
BlueDevil Products 00236 Transmission Sealer - 16 Ounce
- Guaranteed Permanent Seal
- Restores Dried, Cracked, and Shrunken Rubber Seals
- Works in Manual or Automatic Transmissions
- Permanent Seal
$12.99
Rislone High Mileage Transmission Stop Slip with Leak Repair, 16.9 oz
- Eliminates Slipping: Performance additives restore bands & clutches to stop slip, eliminate hesitation and reduce rough shifting.
- Quiets Noise: Renews and stabilizes automatic transmission fluid (ATF) reducing noise, shudder and chatter.
- Fixes Hard Shifting: Premium formula restores transmission performance and saves on costly transmission / transaxle repairs.
- Excellent for Preventative Maintenance: Works with any front wheel drive, rear wheel drive, all-wheel drive and four wheel drive automatic transmission. Do not use in CVT transmission.
- Restores Transmission Performance: Stops fluid loss, reduces friction & wear, and protects internal components; Lowers operating temperature, the number one cause of transmission failure.
$9.99
AT-205 Seal Leak Stopper 8 Ounce - 2 Pack
- Professional strength fast acting resealer, stops leaks fast
- Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
- Does not contain petroleum distillates, will not over-swell or breakdown seals
- Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
$36.35
SALE
−$1.46
Lubegard 19610 Instant Shudder Fix
- Instantly eliminates torque converter shudder
- Provides four times less wear than regular ATF
- The original transmission shudder fix
- Voted top product by transmission professionals
$7.99
SALE
−$1.83
Berryman Products 0712 Transmission and Power Steering Sealer with Easy Pour-in Long-Neck Bottle, 11 Ounce, (Single Unit)
- Stops leaks in automatic transmissions and power steering units
- Gently revitalizes hardened seals and O-rings
- Made with premium plasticizers, lubricants, and additives
- Compatible with all varieties of power steering and automatic transmission fluids
- Improves rough shifting
$14.30
K&W 402033X6 Trans-X Automatic Transmission Stop Leak & Tune-Up - 32 Fl Oz Leak Repair Solution for Automotive, Power Steering, Hydraulic Systems | Car Care Fluids
- K&W SEALANTS & SOLUTIONS: From head gaskets and engine blocks to automatic transmissions and power steering, K&W products are made to stop leakage in aging vehicles. Our sealants provide an effective alternative to costly repairs and parts replacements.
- TRANS-X STOP LEAK & TUNE-UP: Our formula prevents leaks caused by aged seals & gaskets place. Powerful cleaning agents remove sludge, gums, & varnish that helps to prevent premature failure and extends transmission life.
- APPLICATION RANGE: Trans-X is formulated to repair leaks in automatic transmissions, power steering, & hydraulic systems, and can be used as preventative maintenance when added to transmission fluid. This solution is not compatible with CVT or manual transmissions.
- SAFE HANDLING: Highly flammable leak repair solution must be stored in a well-ventilated place away from direct heat. Wear appropriate personal protective equipment such as safety glasses and gloves.
- PRODUCT SPECIFICATIONS: Trans-X Stop Leak & Tune-Up Solution is available with 32 fl oz. fill.
$20.70
Last update on 2025-05-03 / Affiliate links / Images from Amazon Product Advertising API