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Fuelab 51504-4 Series Adjustable Fuel Pressure Regulator - 515

Manufacturer

Picture for manufacturer Fuelab

Part Number

51504-4
7 reviews
Sale Price

$210.26

Estimated ship date Sunday, November 22

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Product Details

The Fuelab 51504-4 is a 515 Series adjustable fuel pressure regulator engineered for high-performance carbureted and fuel-injected applications. This precision-built regulator features versatile port configurations that accept both port-style and non-port-style union fittings without interference, providing maximum installation flexibility. CARB compliant for legal use in all 50 states.

Key Features:

  • Dual -6AN inlet ports and single -6AN return port (bottom-mounted) for clean routing
  • Adjustable pressure range supports 1-125 PSID applications (carbureted to EFI)
  • Compatible with gasoline, diesel, methanol, and ethanol fuels
  • Precision-machined billet aluminum construction with military-spec Type II anodizing (MIL-A-8625)
  • Fine thread pitch adjustment mechanism for precise pressure tuning
  • 1/8 NPT gauge port with plug for external fuel pressure monitoring
  • 1/8 NPT pressure reference port with barbed fitting for manifold vacuum/boost signal
  • Includes versatile mounting bracket and stainless steel hardware
  • Backed by Fuelab's 2-year limited warranty

Ideal for street performance, racing, and custom fuel system builds requiring reliable, adjustable fuel pressure control with professional-grade construction quality.

Products specifications

Range

4-12 psi

Size

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

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

They have the best prices and very fast shipping

Lowest price, fast shipping. Thanks!

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. Easy order placement through Amazon. Let's see how fulfillment goes.

Best price on the net! Haven't got my order yet, it just shipped so we will see from there.

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