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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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25% Off Select Parts and Accessories
Receive 25% Off Your Online Purchase. Use promotional code MMJ25 at checkout to receive discount. 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 will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs, A/C Parts, Belts, Water Pumps, Drums & Rotors, Pads & Shoes, Calipers, Brake Hydraulics. Excludes the following brands: 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, Wagner and BBK Performance. Valid online until 2:59 am EST on 4/30/17.

Free Shipping on Orders Over $50 or in-store pickup

Service your transmission as recommended to improve shifting performance, help improve fuel economy, prevent leaks and extend transmission life. Castrol’s® Transmax® ATF fluids are OEM approved and specially formulated to protect vital transmission components.

Castrol® Transmax® with Smooth Drive Technology™ automatically adjusts its friction level in response to changing pressures on critical transmission parts – delivering enhanced protection and a smoother drive for longer, eliminating noise and shudder and keeping things running like clockwork.

Castrol® Transmax® Full
Synthetic Multi-vehicle with
Smooth Drive Technology™
First product licenced for both GM DEXRON®-VI and Ford MERCON® LV and exceeds JASO 1A requirements.

Castrol® Transmax®
DEXRON®-VI with Smooth
Drive Technology™
Certified for use in all General Motors vehicles.

Castrol® Transmax®
Smooth Drive Technology™
Certified for use in Ford vehicles that require Mercon® or Mercon® V.

Castrol® Transmax® ATF+4®
Full synthetic formula exceeds ATF+3® requirements. For use in Chrysler vehicles.

Castrol® Transmax®
For use in older Ford and General Motors vehicles.

Castrol® Transmax® Import
For use in Honda, Toyota, Nissan and other imported vehicles.

Castrol® Transmax® Type F
For use in older Ford vehicles that require Type F ATF. Formulated to control transmission wear.