SKU: 21499747504

Holley Diecast In-Tank RetroFit Fuel Module Returnless System 12-159

Sale price$427.48 Regular price$474.98
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley Diecast In-Tank RetroFit Fuel Module Returnless System 12-159450 LPH Drop In Retrofit EFI Fuel System w Hydramat Supports up to 875 EFI or 1100 Carb HP (@ 60 PSI at 13. 5 Volts 16. 9 AMP Draw) Of course there are many variables, estimates are based on gasoline. Are you interested in an EFI retrofit kit, but just can't get past the complication of the fuel system? Holley is proud to introduce their Universal In Tank Retrofit Fuel Modules! Available in return and returnless versions, you can rest assured Holley

450 LPH Drop-In Retrofit EFI Fuel System w/Hydramat Supports up to 875 EFI or 1100 Carb HP (@ 60 PSI at 13.5 Volts / 16.9 AMP Draw) Of course there are many variables, estimates are based on gasoline.

Are you interested in an EFI retrofit kit, but just can't get past the complication of the fuel system? Holley is proud to introduce their Universal In-Tank Retrofit Fuel Modules! Available in return and returnless versions, you can rest assured Holley has the solution you need for your EFI fuel pump woes.

NOTES: It is recommended to use a Holley 12-753 30 Amp Fuel Pump Relay along with a minimum size of 12 Gauge wire for your installation. *** Maximum 6AN line and fitting size due to space limitations between unit and fuel tank.

Features:

  • The easiest way to convert your vehicle to an in-tank, EFI fuel system
  • Installs in any fuel tank from 7? to 12? deep to fit a wide variety of applications
  • The low profile 5 inch diameter design is only 1.275 inch thick above the tank mounting surface for added clearance when needed
  • The innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit
  • The clamping system allows you to rotate the unit 360 degrees for easier clocking of the plumbing and wiring locations under your ride
  • Includes innovative Holley Hydramat to ensure consistent fuel supply. The 3? x 15? HydraMat mounting flange has 6 clocking pin locations to allow for 360 degree adjustment to clear sending unit levels or any tank floor restrictions
  • Die cast aluminum construction for corrosion resistance and long lasting good looks
  • ?? NPT ports for a wide variety of plumbing options
  • Ideal for Terminator EFI, Sniper EFI, MSD Atomic EFI or any TBI of EFI conversion
  • Optional roll over valve available
  • Two different fuel pumps are available to match your requirements - 255LPH or 450LPH for both return and returnless style systems

Specs:

Application Universal
Average Current Draw 16.9Ampere
Average Flow Rating 450Liters per Hour
Brand Holley
Clearance Category Air and Fuel Delivery
Connector Color Black
Connector Gender Male
Connector Quantity 1
Discount Percentage 26-50%
Emission Code 5
Finish Black
Free Flow LPH 450
Fuel Filter Included Yes
Fuel Sending Unit Included No
Fuel Tank Pressure Sensor Included No
Fuel Type E85, Gasoline
Gasket Or Seal Included Yes
Gasket Or Seal Material Foam
Grade Type Performance
Height Adjustable
Housing Material Aluminum
In Tank or External In Tank
Inlet Fitting Thread Size 1/4Inch
Inlet Quantity One
Inlet Size 1/4 inch NPT
Inlet Type NPT
Internal Or External Strainer External
Lock Ring Included No
Material Die Cast Aluminum
Maximum Pressure 60Pounds per Square Inch
Minimum Fuel Tank Depth 7 inches
Mounting Hardware Included Yes
Negative Ground Yes
NPT Thread 1/4 NPT
Outlet Fitting Thread Size 1/4Inch
Outlet Quantity One
Outlet Size 1/4 inch NPT
Outlet Type NPT
Product Type Fuel Pump Module
Pump Type Electric
Regulator Included No
Sale Category Air and Fuel Delivery
Top Mount Diameter 5Inch
Universal Or Specific Fit Universal
Voltage 12Volts DC
Warning California Proposition 65
Warranty Limited 90 Day
Wire Harness Included Yes
Wire Quantity 2
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21499747504

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 2352 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Deanna Thurmond
Dallas, US
★★★★★ 5
Great security features.
Size: 1 Camera
Works great I just wish the battery last longer.Nightvision is great as well weather proof.Sticks up and is sturdy as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
H
Verified Purchase
Helen
Carnegie, US
★★★★★ 5
Best 100-Inch TV Experience I’ve ever had
Style: 2026 Model, Size: 100-Inch, Style: 2026 Model, Size: 100-Inch
Absolutely stunning picture and performance! I’ve been using the Toshiba 100" Z670 Series Mini-LED TV 9 hours+ every day, and it’s nothing short of amazing. The Mini-LED backlight combined with QLED delivers incredible contrast and vibrant colors — way better than conventional LED TVs. The native 144Hz panel makes motion incredibly smooth, whether I'm watching sports or playing fast-paced games on my PS5. And it’s super thin!! Game Mode Pro works flawlessly; I barely notice any input lag. The REGZA Engine Zri keeps everything snappy, and Dolby Vision IQ + HDR10+ make movies pop. Sound from Dolby Atmos is surprisingly immersive for built-in speakers. Setup was easy with Fire TV built-in, and Alexa is a nice bonus. For a 100-inch screen, the design is sleek and edge-to-edge. Definitely worth every penny if you want a premium home theater experience. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
D
Verified Purchase
David
Chelsea, US
★★★★★ 5
Great picture quality and smooth performance
Style: 2026 Model, Size: 65-Inch, Style: 2026 Model, Size: 65-Inch
This Toshiba 65" Mini‑LED TV has been a great upgrade for my living room. The picture is bright and clear, and the colors look very natural. The 144Hz refresh rate makes movies and games feel smooth, and Dolby Vision IQ works well in different lighting. The built‑in Fire TV is easy to use, and the sound with Dolby Atmos is better than I expected. Overall, it’s a solid TV for everyday watching and gaming.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
V
Verified Purchase
Vortex51x
Grantham, US
★★★★★ 5
Good quality
Style: 2026 Model, Size: 85-Inch
I am extremely impressed with this Toshiba 85” mini LED TV. The picture quality is absolutely stunning. Sound quality is better than expected for a flat-screen TV. The built-in audio is clear and immersive, and Dolby Atmos adds a nice sense of depth without needing an immediate soundbar upgrade. The Fire TV interface is easy to use and responsive, with Alexa built-in for convenient voice control. Setup was quick, and streaming apps run smoothly without lag. This TV feels like a premium product at a great value for its size and features, if you’re looking for a larger-screen TV with excellent picture quality, strong gaming performance, and smart features, this is definitely a great choice
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
J
Verified Purchase
Joyce Du
Lake Worth, US
★★★★★ 5
Good audio system
Style: 2026 Model, Size: 55-Inch, Style: 2026 Model, Size: 55-Inch
I got the 55-inch model to replace an older Hisense 43A6 that stopped working, and I'm happy with it. The bigger screen is nice and movies look much better and speakers even better than on my old TV, especially at night. It was also easy to set up since I don't want to spend a lot of time with settings. The sound quality is better than I expected. More than good enough for normal use. Overall it feels like a solid upgrade from what I had before.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026

recommand products