Dual Stealth Black 425C Onboard Air System (175 PSI, 4.80 CFM, 58 Amp, 12V, 2.5 Gal. Tank)

VIAIR’s Gen. 2 Dual 425C Onboard Air System (OBA) is our fastest filling OBA, featuring our new 425C Gen.2 compressors capable of putting out 4.80 CFM at 0 PSI head pressure. The 425C is our first compressor with duty cycle of 33% at 175 PSI and 50% at 100 PSI. This pre-packaged compressed air solution includes: two Platinum or Stealth Black 425C compressors, a 2.5 gallon air tank, an inline pressure regulator, and all necessary components needed to install a working onboard air system.

The 425C features upgraded internal components that make it a true 175 PSI-rated working pressure pump, and has newly designed thicker vibration isolators that absorb vibration and sound. The modern-inspired head design highlights an eye-catching setup. This Gen. 2 Onboard Air System delivers the vital air source for numerous pneumatic applications.

Note: Use thread sealant for proper installation. Thread tape is not recommended. Properly sealed, recommended torque for 1/8” is 10 ~ 11 ft. lbs. Recommended torque for 1/4” and 3/8” is 16 ~ 18 ft. lbs.

Features & Specifications

Features	Specifications
– 2.5 Gallon Matte Black VIAIR Air Tank (200 PSI)	– 12-Volt
– (2) 425C Platinum or Stealth Black VIAIR Compressors	– Permanent Magnetic Motor
– Illuminated Dash Panel Gauge Kit, Black Face 200 PSI	– Duty Cycle: 50% @ 100 PSI
– Digital Tire Inflation Gun (180PSI)	– Duty Cycle: 33% @ 175 PSI
– 0-220 PSI Pressure Regulator	– Max. Working Pressure: 175 PSI
– Sealed Pressure Switch (140 PSI on, 175 PSI off)	– Max. Air Tank Size: 5.0 Gallon
– 1/4” Drain Cock	– Combined Max. Amp Draw: 60 Amps
– Heavy Duty 80 Amp Relay	– Ingress Protection Rating: IP67
– Mini ANL Fuse Holder with 60 Amp Fuse	– Dimensions: 9.25″L x 4.14″W x 6.59″H
– 1/4” Quick Connect Coupler (M)	– Net Weight: 11.10 lbs.
– 1/4” 250 PSI Safety Valve	–
– (4) 1/4” NPT(M) to 1/4” Airline Straight Push to Connect Fittings	–
– 6-Port Billet Manifold with Mounting Bracket (1/4”)	–
– (2) 20ft. 1/4” Air Line Included	–
– 5 Pc. 1/4” NPT Plugs Kit	–
– Extension Braided Black Coil Hose	–
– Rubber Tip Blow Gun	–
– 3-in-1 Air Down Gauge	–
– Stainless Steel Air Line Cutter	–
*All Fittings are NPT rated unless otherwise noted.*	Wiring harness NOT included.

Performance Data

PSI	CFM	A	BAR	LPM	A
0	4.80	40	0	136.0	40
10	4.63	43	1.0	125.0	45
20	4.42	47	2.0	118.0	48
30	4.15	48	3.0	111.0	53
40	3.93	52	4.0	100.0	55
50	3.70	54	5.0	95.0	56
60	3.53	55	6.0	84.0	57
70	3.35	56	7.0	80.0	57
80	3.18	57	8.0	72.0	57
90	2.98	57	9.0	69.0	56
100	2.83	57	10.0	59.0	55
110	2.68	58	11.0	55.0	53
120	2.55	57	12.0	49.0	51
130	2.44	56
140	2.27	55
150	2.10	54
160	1.95	53
170	1.80	52
175	1.74	51

* Supply Voltage: 13.8 Volts

Fill Rates

2.5 Gallon Tank	Fill Rate
0 to 175 PSI	1 min. 40 sec. (± 05 sec.)
140 to 175 PSI	28 sec. (± 03 sec.)
5.0 Gallon Tank	Fill Rate
0 to 175 PSI	3 min. 06 sec. (± 10 sec.)
140 to 175 PSI	57 sec. (± 05 sec.)
37″ x 12.5″ TIRES	Fill Rate
0 to 30 PSI	3 min. 16 sec. (± 10 sec.)
15 to 30 PSI	57 sec. (± 05 sec.)
40″ x 15.5″ TIRES	Fill Rate
0 to 30 PSI	4 min. 01 sec. (± 10 sec.)
15 to 30 PSI	2 min. 11 sec. (± 05 sec.)

User Manual

User Manual (update soon)

Wiring Diagram

Dimensional Drawing