My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Fuelab 51505-1-S-T Series Adjustable Fuel Pressure Regulator TBI - 515

Manufacturer

Picture for manufacturer Fuelab

Part Number

51505-1-S-T
6 reviews
Sale Price

$204.32

Estimated ship date Monday, November 23

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Fuelab 51505-1-S-T is a 515 Series adjustable fuel pressure regulator designed specifically for TBI (throttle body injection) applications. Engineered for performance and flexibility, this regulator accepts both port style and non-port style union fittings without interference, making installation straightforward across various fuel system configurations.

Key Features:

  • Two -6AN inlet ports and one -6AN return port (bottom-mounted) for flexible plumbing options
  • Adjustable pressure range suitable for carbureted applications as low as 1 PSID up to fuel injected applications at 125 PSID
  • Compatible with gasoline, diesel, methanol, and ethanol fuels
  • Precision-machined billet aluminum construction with Type II anodizing per military spec MIL-A-8625
  • Fine thread pitch adjustment mechanism for precise pressure tuning
  • 1/8 NPT gauge port with plug for connecting an external fuel pressure gauge
  • 1/8 NPT pressure reference port with barbed fitting for vacuum/boost reference
  • Includes versatile mounting bracket with stainless steel hardware
  • Backed by Fuelab's 2-year limited warranty

This regulator combines durable construction with precise adjustability, making it an excellent choice for performance enthusiasts looking to optimize fuel delivery in their TBI fuel systems.

Products specifications

Range

10-25 psi

Size

(2) -10AN Inlets, (1) -6AN Return

Great price on Tokico D-specs and good communication. Will definately do business with them again!

Best price for the item I needed. Very fast shipping and there consumer service was great on the phone.

Fast shipping, good customer service!

Autoplicity agent was very helpful over the phone. He answered all my questions & even did some research to make me feel comfortable I was getting the appropriate parts I needed for my car. I was very pleased & will shop Autoplicity again.

Everything went smoothly, love the prices and the ease of transaction, hope to buy from you real soon, Nice people.

Great prices, quick processing, and an overall excellent company

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy