# ARB ARB Twin onboard compressor

Canonical page: https://configmyrig.com/products/arb-twin-onboard-compressor

12 V twin-motor onboard compressor; vehicle mount and inflation plumbing are separate decisions.

## Selected configuration

- Part/component: CKMTA12
- Configuration: Exact SKU listed
- Listed parts: $659.95 USD / selected configuration
- Source checked: October 25, 2026 (Pacific)
- Fitment: Universal equipment · complete installation requires compatible vehicle mounting and connections
- Product mass: 17.4 lb product mass
- Net vehicle addition: 17.4 lb net addition
- Weight basis: Installed net change requires all mounting hardware and factory parts removed; shipping mass is not installed mass.
- Professional install: 3–5 hr; researched planning estimate
- Basis: mounting, protected electrical connections, outlet plumbing and leak / function checks. Compressor, mounting tray and hose work can overlap.
- Contents: 12 V twin-motor onboard compressor; vehicle mount and inflation plumbing are separate decisions.
- Critical specifications: 17.4 lb compressor; 150 psi maximum; 68.6 A maximum; 6.16 CFM at 0 psi.
- Supporting work: Verify protected high-current supply and an approved, ventilated location. A small distribution circuit is not a substitute.

## Prerequisites

- Selected product / listed contents (included): 12 V twin-motor onboard compressor; vehicle mount and inflation plumbing are separate decisions.
- Compatible vehicle compressor mount (check): Select a documented LC250 mounting system and coordinate underhood space.
- Tire-inflation hose / fittings (check): Confirm rated hose, outlet coupling and required plumbing.
- Electrical capacity and protection (check): Confirm manufacturer harness, fusing, current demand, cable route and service access against the complete vehicle build.
- Installation / compatibility notes (check): Verify protected high-current supply and an approved, ventilated location. A small distribution circuit is not a substitute.

## Seller offers (selected configuration, low to high)

- [ARB](https://store.arbusa.com/twin-motor-onboard-air-compressor-ckmta12/): $659.95 USD

Prices are dated snapshots; tax, shipping, installation and unlisted supporting equipment are extra. Availability is not inferred.

## Installation resources

- [CKMTA12 twin compressor installation guide](https://store.arbusa.com/content/CKMTA12_Installation%20Guide.pdf): official; CKMTA12 compressor · component manual. Compressor mounting and electrical installation. Vehicle-specific tray, air fittings, heat protection and wiring integration need their own instructions.
- [ARB twin compressor installation walkthrough](https://arbusa.com/news/arb-twin-compressor-installation-guide): official; Twin compressor family · general installation. Illustrated manufacturer walkthrough of mounting, remote coupling, loom and testing. Vehicle-specific brackets and LC250 hybrid power integration are separate.

## All documented options

- [Exact SKU listed](https://configmyrig.com/products/arb-twin-onboard-compressor): CKMTA12; $659.95 USD / selected configuration; 17.4 lb product mass

## Owner evidence

- [Owner forum report](https://forum.expeditionportal.com/threads/arb-twin-12-volt-air-compressor-ckmta12-troubleshooting.216721/): Reports that a newly installed compressor stopped running before field use and sought ARB troubleshooting. Match: CKMTA12 model; old installation/revision and unresolved individual report. Self-reported owner/use; purchase and configuration not independently verified

## Related guidance

- [Planning guide](https://configmyrig.com/guides/electrical-system-planning)
- [ARB](https://configmyrig.com/brands/arb)
- [Onboard air](https://configmyrig.com/categories/onboard-air)

AI-assisted planning; exact vehicle/application and current supplier documentation require confirmation.