Description

Goodyear 1R12‑375 is a Super‑Cushion® rolling‑lobe air spring commonly used on heavy‑duty trucks and trailers, especially Hendrickson trailer suspensions.
Key Specifications (1R12‑375)

Air Spring Type: Rolling lobe
Compressed Height: ~7.8 in
Extended Height: ~24.9 in
Top Plate Diameter: 9.0 in (1 top mounting hole, 3/4‑16)
Bottom Plate Diameter / Piston: 9.5 in, steel piston
Bottom Mounting Holes: 4 (1/2‑13)
Bottom Hole Spacing (C‑C): 5.66 in
Air Inlet: 1/4″ NPT (offset ~3.05″)
Bumper: Yes
Bellows No.: 566‑24‑3‑165
Common Cross‑References / Replacements
This part is widely cross‑referenced and interchangeable with the following (always confirm application):

Firestone: W01‑358‑9265
ContiTech: 64288 / 9 10‑19 P‑435
Hendrickson: S‑20124, C‑20124, 20413
Automann: AB‑9265 / 1DK23L‑9265
Triangle: AS‑8435
TRP: AS92650
Fleetrite: FLTA1R12375
Torque: TR9265
World American: WA01‑9265C