Trailer Air Spring Replaces S-22173, W01-358-9921, 1R12-440

This Trailer Air Spring is a high-quality reversible sleeve air spring engineered to replace worn or damaged OEM air springs, including models S-22173, W01-358-9921, and 1R12-440.  Designed specifically for trailer applications, it restores optimal air suspension performance, improving ride quality and load handling. Its durable construction ensures long-lasting reliability under heavy-duty conditions, helping to maintain vehicle stability and reduce wear on other suspension components. This air spring is an essential upgrade for maintaining the safety and efficiency of your trailers suspension system.

• Extended Height: 21.60″
• Compressed Height: 6.50″
• Top Plate Width: 9.00″
• Piston Width: 9.50″
• Weight: 14.20 lbs

Cross Reference:

AUTOMANN: 566.CT64402 / AB1DK23P-9921 / 566.ER9921
BWP: M-3552
CONTITECH: 9 10-17.5 P 443 / 64402 / 9 10 17.5 P 443 / 910-17.5P443 / 910175P443
DAYTON: 452-9921 / 10-99921
EUCLID: E-FS9921
FIRESTONE: W01-358-9921 / 9921 / W013589921
FLEETPRIDE: AS9921
GOODYEAR: 1R12-502 / 1R12440 / 1R12-440 / 1R12502 / 1R12909 / 1R12-909
HENDRICKSON: S3830 / S22173
HOLLAND (NEWAY): 905-57-117
MERITOR: FS9921 / MAF9921
MIDLAND HALDEX: CS112502
NEWAY: 90557117 / G2299921200
SAF HOLLAND: GOLDLINE G2299921200
TAURUS: 6391
TRIANGLE: 8443
TRP: AS99210
WATSON AND CHALIN: AS-0090 / AS0090