Didn’t get to select L or R side when ordering.
Didn’t get to select L or R side when ordering.
The hose and fittings are nice quality. Their ability to get stuff shipped out quickly dose not happen.
It took a week to get my order to shipping.
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Aeromotive A1000 Gen II EFI Fuel Pressure Regulator
$385.00
Free Shipping $99+
Lifetime Warranty
Expert Support
Reliable shipping
Aeromotive A1000 Gen II EFI Fuel Pressure Regulator — Return-Style
Stable EFI fuel pressure for serious builds. The A1000 Gen II is adjustable 40–75 PSI, boost-referenced 1:1, and purpose-built for A1000-class pumps and below. Choose your port size (ORB-06, ORB-08, or ORB-10) to match your line size and flow needs. All models include a dedicated 1/8" NPT gauge port and an ORB-06 return.
Which model do I need?
13138 — ORB-06
Best with -6 AN feed/return on street/strip EFI up to A1000-class pump flow.
Best with -6 AN feed/return on street/strip EFI up to A1000-class pump flow.
13139 — ORB-08
Common choice for -8 AN plumbing and higher fuel demand.
Common choice for -8 AN plumbing and higher fuel demand.
13140 — ORB-10
For big -10 AN feeds or long, high-flow return systems.
For big -10 AN feeds or long, high-flow return systems.
Why builders choose A1000 Gen II
- Rock-steady control: precise base pressure with true 1:1 boost reference for forced induction.
- High-flow architecture: engineered for A1000-class and smaller pumps with excellent pressure stability.
- Clean plumbing: twin side ports for feed/rail loop, bottom return port; black bright-dip anodized body.
- Fuel compatible: gasoline, ethanol (E85), methanol/alcohol, and diesel.
- Bracket included: mount to a firewall tab, chassis plate, or rail.
Variant details
| Model | Pressure Range | Inlet/Outlet Ports | Return Port | Gauge Port | Boost Ref | Bracket |
|---|---|---|---|---|---|---|
| 13138 (ORB-06) | 40–75 PSI, adjustable | (2) ORB-06 | ORB-06 | 1/8" NPT | 1:1 vacuum/boost | Included |
| 13139 (ORB-08) | 40–75 PSI, adjustable | (2) ORB-08 | ORB-06 | 1/8" NPT | 1:1 vacuum/boost | Included |
| 13140 (ORB-10) | 40–75 PSI, adjustable | (2) ORB-10 | ORB-06 | 1/8" NPT | 1:1 vacuum/boost | Included |
Compatibility & plumbing
- Return-style EFI systems (single or dual rails). Works NA or boosted.
- Ports are ORB (O-ring boss): seal with O-rings—no tape/paste on ORB threads. Use AN hose ends on the flare side.
- Size feed/return to pump output: -6 AN for moderate flow, -8 AN common on higher output, -10 AN for maximum feed capacity.
Install notes
- Plumb pump → rails → regulator → tank (return on the bottom port).
- Set base pressure with the vacuum/boost line disconnected, then reconnect for 1:1 rising rate.
- Mount away from heat and moving parts; use the included bracket.
Pair it with proven components
Aeromotive Inline Filter (AN male)
High-flow pre- or post-pump filtration Aeromotive Inline Filter (ORB ports)
Direct ORB hookups to the regulator ORB ⇄ AN Adapters
Size up/down to -6, -8, or -10 AN
High-flow pre- or post-pump filtration Aeromotive Inline Filter (ORB ports)
Direct ORB hookups to the regulator ORB ⇄ AN Adapters
Size up/down to -6, -8, or -10 AN
What’s included
- (1) A1000 Gen II EFI fuel pressure regulator (choose ORB-06, ORB-08, or ORB-10).
- Mounting bracket and 1/8" NPT gauge port plug. (Fittings/lines sold separately.)
Safety: Relieve fuel pressure before service. Check for leaks after adjustment. Follow ECU/OEM guidance when changing base pressure.