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VIAIR 400P EF Digital Compressor (part 40243)
Model: 400P EF Digital / 40243 · US configuration
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Assess part 40243 as a direct-battery Digital compressor for a vehicle-tire scenario requiring press-on Schrader and user-selected stopping. It has a 30A maximum draw, an 87.3A inrush figure at 0 PSI and a distinct 40A fuse; its 30%-at-100-PSI duty claim matters for sustained work.
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Assessment scenario: Preset-stop direct-clamp car-tire setup with a press-on Schrader chuck
A source-based assessment scenario that combines a 12V direct-battery connection, documented passenger-car use, an included Schrader/press-on path and user-selected target stopping. It does not mean these are the visitor’s actual requirements or certify a specific tire, vehicle circuit or offer.
Explore this buying guide ↗Why consider this model?
- The exact VIAIR page and manual identify 400P EF Digital / 40243, a 12V battery-clamp setup and a digital control procedure that stops at the operator’s selected tire-pressure target.
- The manual describes a clip-and-lock/press-on Schrader connection, while VIAIR identifies car-tire use; the same reviewed arrangement supports the selected power, use, adapter, chuck and target-stop requirements.
- The page and manual describe a 25-foot coiled hose, a six-foot power lead and a 10.75-pound compressor; these are package and reach details to compare with the vehicle layout, not performance evidence.
Tradeoffs to weigh
- The 30A maximum, 87.3A inrush at 0 PSI and 40A in-line fuse describe different electrical conditions. The clamp setup is not documented as a dashboard accessory-socket arrangement.
- VIAIR rates the compressor 100% duty at 40 PSI but 30% at 100 PSI; the pressure-specific claim is a limit, not an unlimited runtime or a tire fill-time forecast.
- The exact ProductName=40243 SaferProducts.gov query returned an empty array only; this one bounded lookup is not a recall clearance or safety conclusion.
Check these before ordering
- Confirm the seller offers 400P EF Digital / part 40243, not 400P EF Automatic / 40145 or the separate 40244 RV Digital package.
- Verify that the vehicle and installation can support the specified battery-clamp connection; compare the 30A maximum, 87.3A inrush at 0 PSI and 40A fuse instructions with the current vehicle and compressor manuals.
- Check for the exact 25-foot coiled hose, six-foot power lead, supplied clamp/SAE connectors and listed kit pieces; a photo or adjacent model package is not proof of seller contents.
- Use the vehicle placard or tire maker’s target, follow the manual’s engine-running, attended-use, placement and cool-down instructions, and respect the pressure-specific duty limits.