Description

Overview

Air Bag Assembly D36 Plastic Piston supports trailer air suspension service where a complete air spring with piston is required. This assembly suits common BPW and ROR-MERITOR suspension configurations that use a Type 36 style air bag. Replacing a worn or leaking unit helps restore ride height control, reduce chassis roll, and limit uneven tyre wear.

Features

This complete-style air spring assembly is built for service replacement while keeping selection-critical geometry consistent. The plastic piston helps reduce corrosion compared with steel pistons in harsh road spray environments.

• Complete air spring assembly supplied with piston
• Suitable for BPW and ROR-MERITOR air suspension
• Type 36 style size class for common heavy trailer setups
• Plastic piston construction for improved corrosion resistance

Specifications and Materials

Part number: SP0022ASPM.

• Type: complete air spring assembly
• Piston: plastic
• Height: 340mm
• Outer diameter (max): 352mm
• Volume: 31752cm3

For general installation and inspection guidance, refer to the BPW air bags technical guide.

Compatibility and Fitment

Confirm your suspension type and mounting style before ordering, because Type 36 air springs can vary by top and bottom fixing details. This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required.

05.429.42.58.0, 0542942580, P10.881, SP55881-KP, TR8966, W01-M58-8969, 881 MB, 05.429.43.51.0, BPW 05 429 43 51 0, 0542943510, CONTITECH 881 MB P30, 881MBP30, FIRESTONE 1T66F-10.8, W01 M58 8667, W01M588667, DUNLOP D14B41, GOODYEAR 1R14-748, 1R14748, PHOENIX 1 DK 32 1, 1DK321.

Compliance and Safety

Depressurise the air system and support the trailer safely before removal. Torque fasteners to the axle or suspension manufacturer specification, then re-check after initial service kilometres. Inspect air lines, fittings, height control valves, and mounting brackets during the job so the new air spring is not forced to run misaligned or leak from another fault.

Trailer Applications

This air spring assembly commonly appears in trailer air suspension systems across:

• BPW-equipped semi-trailers and dog trailers
• ROR-MERITOR trailer suspension arrangements
• General heavy trailer air suspension repairs
• Fleet maintenance where standardised Type 36 air bags are used

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Finally, verify dimensions, air port orientation, and mounting details against the part removed from the trailer before installation.

Why Choose ICS Trailers

ICS Trailers backs suspension parts with practical selection support, so you can match air spring size and application with fewer delays. We pack parts carefully and offer Australia-wide delivery options to help keep trailers moving. If you are unsure about fitment, contact the team with axle and suspension details for a quick check.

Browse Suspension parts at ICS Trailers