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Description
Holley In-Tank RetroFit Fuel Module 525 LPH Returnless Style 12-135525 LPH Drop In Retrofit EFI Fuel System w Hydramat Supports up to 1200 EFI or 1450 Carb HP (@ 60 PSI at 13. 5 Volts 16. 9 AMP Draw) The Holley In tank RetroFit Fuel Modules are now available with a 525 LPH Pump. 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:
525 LPH Drop-In Retrofit EFI Fuel System w/Hydramat Supports up to 1200 EFI or 1450 Carb HP (@ 60 PSI at 13.5 Volts / 16.9 AMP Draw)
The Holley In-tank RetroFit Fuel Modules are now available with a 525 LPH Pump.
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:
- Retrofit Fuel Module 525 LPH-Returnless Style
- Installs in any fuel tank from 8? to 12? deep to fit a wide variety of applications
- The low profile 5 inch diameter design is only 1.275 inches 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
- Black anodized aluminum construction for corrosion resistance and long lasting good looks
- ?? NPT ports for a wide variety of plumbing options
- Optional roll over valve available
Specs:
| Application | Universal |
|---|---|
| Average Current Draw | 16.9Ampere |
| Average Flow Rating | 525Liters 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 |
| Free Flow LPH | 525 |
| 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 | None |
| Inlet Type | NPT |
| Internal Or External Strainer | External |
| Lock Ring Included | Yes |
| Material | Billet Aluminum |
| Maximum Pressure | 60Pounds per Square Inch |
| Minimum Fuel Tank Depth | 8 Inches |
| Mounting Hardware Included | Yes |
| Negative Ground | Yes |
| NPT Thread | 1/4 NPT |
| Outlet Fitting Thread Size | 1/4Inch |
| Outlet Quantity | One |
| Outlet Type | NPT |
| Product Type | Fuel Pump Module |
| Pump Type | Electric |
| Regulator Included | Yes |
| Sale Category | Air and Fuel Delivery |
| Top Mount Diameter | 5Inch |
| Universal Or Specific Fit | Universal |
| Voltage | 12Volts DC |
| 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:
- 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
4.6 ★★★★★
Based on 623 reviews
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Product Reviews
★★★★★ 4
Fine little tight around collar
Color: White, Size: X-Large
Little tight around collar
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
★★★★★ 5
Great
Color: Light Blue, Size: XX-Large
Great dress shirt !!
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Highly Recommended Dress Shirt
Fit Type: Regular Fit, Color: White, Size: Medium
Honestly, I Love It. Fits Great, Neck Isn't Too Tight Like Most Shirts, And It's Comfortable. It Is 100% Cotton, So Dont Forget To Iron It Before Wearing It. High Quality Dress Shirt. Highly Recommended.
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Reviewed in the United States on October 21, 2025
★★★★★ 5
Surprisingly good shirt for the price
Fit Type: Regular Fit, Color: White, Size: XX-Large
I’m generally pleased with my purchase. I got a 2XL because the website it would fit my neck. Around the waist it fit similar to Amazon Essentials work shirts (like mechanics use which I find comfortable).
It was snug around the waist when sitting, but I can’t complain because I have a belly. I did find the neck snug when buttoning the top button so it means the neck is 18 or 18.5 and I wear a 19/19.5 to have 1-2 fingers space in the collar.
The shirt is surprisingly thick like Amazon’s work shirts, much thicker than other dress shirts from another brand.
And I am pleased that this shirt has button holes like other Amazon shirts does, all vertical button holes except the last one at the bottom which is horizontal. That feature keeps the shirt from unbuttoning itself during daily movement at the office. A very nice feature! I was a little disappointed in how it was packaged however but I have to press and wash it anyway.
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Reviewed in the United States on February 24, 2023
★★★★★ 4
Nice shirt, excellent quality, nice cloth and buttons. No pockets A+
Fit Type: Regular Fit, Color: White, Size: Large
Nice quality shirt cut a little small. The shirt kind of needs to be pressed before wearing however at this price point and quality its a buy!
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Reviewed in the United States on May 19, 2026