Some 1989–1995 Toyota Pickup 2WD rear wheel-cylinder listings are separated by a brake-package identification reference: F18Q versus 17S. The safest way to choose the correct cylinder is to identify the casting mark specified by the parts catalog rather than guessing from year alone.
Quick Part-Number Guide
| Brake-package reference | DFC rear wheel cylinder | Application note |
|---|---|---|
| F18Q | 375-76028 | Cataloged for specific 1989–1995 Toyota Pickup RWD applications identified by F18Q casting |
| 17S | 375-76026 | Cataloged for specific 1989–1995 Toyota Pickup RWD applications identified by 17S casting |
Why the Listing Mentions a Caliper Casting for a Rear Wheel Cylinder
The F18Q and 17S references are used by parts catalogs as brake-package identifiers. The replacement wheel cylinder still installs in the rear drum brake; the front-caliper casting is simply a useful clue for determining which brake package the truck received.
How to Identify F18Q vs. 17S
Inspect the front caliper for the cast-in identification mark requested by the catalog. Clean the casting enough to read the characters and take a photo. If the truck has been modified or the front brake assembly has been swapped, also compare the rear wheel cylinder physically because the front-caliper clue may no longer represent the original complete brake package.
RN70 and Other Exceptions
Older Toyota Pickup cataloging can include cab/chassis, payload and RN70-specific notes around wheel-cylinder fitment. That is another reason not to apply the 1989–1995 F18Q/17S rule to every earlier 2WD Pickup. Use the exact product-year notes for the truck you are servicing.
Before Ordering
- Confirm the truck is a 2WD/RWD Toyota Pickup.
- Confirm model year.
- Read the applicable front-caliper casting mark.
- Compare the existing rear wheel cylinder if the brake system may have been modified.
- Inspect both rear sides for leaks and uneven wear.
- Do not assume left/right or bore size from appearance alone—follow the exact listing.
For more identification detail, see the Toyota Pickup Brake Caliper Identification Guide.
Browse 1989–1995 Toyota Pickup Parts. If the casting is unreadable, use Fitment Help and send clear photos of the front caliper and rear wheel-cylinder/brake assembly.