AEM High Capacity universal billet adjustable fuel pressure regulator (PN 25-305BK), CNC-machined from 6061-T6 aluminum with a black anodized finish. A longer spring gives a 40-130 PSI adjustment range and a single large return orifice handles high-flow pumps, with a 1:1 boost-rising rate for boosted builds. Alcohol- and race-fuel compatible; two -6AN inlets, one -6AN return (9/2016-2018 ORB) and a 1/8in NPT gauge port.
Specifications
| Material | 6061-T6 billet aluminum |
| Finish | Black anodized |
| Adjustment | 40-130 PSI |
| Boost rate | 1:1 rising |
| Ports | 2x -6AN inlet, 1x -6AN return; 1/8in NPT gauge |
| Fuel | Alcohol & race-gas compatible |
| Part Number | 25-305BK |
Documents: Installation Instructions (PDF)
Shipping
- Orders placed before 3 PM ET typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
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