DWR550c Adjustable Carburetor Regulator w/ 3/8 Barb Fittings and Gauge

Name: DWR550c Adjustable Carburetor Regulator w/ 3/8 Barb Fittings and Gauge
Brand: DeatschWerks
SKU: 6-0550-FRB-38
Price: 131.34 USD
Availability: InStock
Rating: 5.0 (5 reviews)

DWR550c Adjustable Carburetor Regulator w/ 3/8 Barb Fittings and Gauge - Main image

$131.34 ~~$199~~ In stock

Category: Fuel Pressure Regulator

Compact Carburetor Adjustable Fuel Pressure Regulator, 6AN x4 Inlets, 6AN Return, Anodized Black, with 3/8 Fittings and Pressure Gauge

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy

If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy

Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy

Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Ella ★★★★★ Oct 22, 2026

Dialed in my idle mixture perfectly after bolting this on—the gauge makes zero-guess tuning a breeze. Fittings were included and sealed up tight on the first try with no leaks.

Jason ★★★★★ Oct 21, 2026

Swapped this onto my small block this weekend and the anodized black finish looks sharp against the intake. The pressure gauge made dialing in the fuel delivery effortless, and those 3/8 barb fittings gave a solid leak-free seal with standard rubber hose.

Joshua L. ★★★★★ Oct 20, 2026

Adjusted the air-fuel mix on my old Holley in about five minutes with this regulator, and the 6AN return line made routing clean and simple. Pressure stayed rock steady even under hard acceleration.