Water Pump Billet Lower Straight Inlet 01-03

Part Number:
RDP-WPI

Manufacturer:

$94.20 - $108.02

Water Pump Billet Lower Straight Inlet 01-03 7.3L Powerstroke

Our replacement Water Pump Billet Lower Straight Inlet allows for a high quality leak-free connection at a competitive price to the rusty, stamped steel OEM unit. 

Includes:
- 6061-T6 Billet Aluminum Body
- Motorcraft Oring
- Stainless Steel Mounting Hardware
- Multiple Anodized Color Choices
- 100% Made In The USA

Can be used on 99-01 models as well if proper matching hose is installed.

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  • 5
    Better than Factory

    Posted by Pete Cunningham on May 1st 2026

    This wasn't even an option, way better quality than the factory steel part, and to my surprise it was also half the price. Keep on making amazing parts for are old truck Riffraff, you are killing it.

  • 5
    Billet water flange

    Posted by Chris Demond on Apr 29th 2026

    Solid piece as advertised! Riff Raff knows how to send stuff fast. Thanks guys

  • 5
    Lower water pump inlet.

    Posted by Jason on Jan 18th 2026

    Looks great, excellent quality and fit perfectly.

  • 5
    A million times better than OEM

    Posted by Tool_Junkie on Nov 4th 2025

    The OEM nipple is made out of steel while the water pump is made out of aluminum. Odd how the engineers at Ford did not know that when you connect two dissimilar metals and run hot liquid through the fitment the steel part corrodes fiercely. This aluminum upgrade is perfect to solve the electrolysis problem that the engineers apparently did not know about when they designed this engine. Furthermore, the OEM steel nipple is $200 at the dealer. This RiffRaff model is light years ahead of Ford’s.

  • 5
    Best upgrade from stock lower fitting

    Posted by Nate on Nov 3rd 2025

    I upgraded my 2000 f250 which has the 90 degree elbow stock. It's a common leak point for these trucks. This part not only looks great but performs well also. I also got the silicone hose to convert to this fitting from the 90 degree. Installation was simple and it came with all the hardware/gaskets needed to replace it. Riffraff has been my go to for years as they make great quality parts and you get a free pen with every purchase. Honestly the pen is the best too.

  • 5
    Sweet!

    Posted by Kyle Beverley on Oct 7th 2025

    Getting rid of the stock 90 off the motor this straight inlet is the ticket and looks great too!

  • 5
    Lower straight inlet

    Posted by Eezie on Apr 30th 2025

    Awesome product, looks cool, high quality, works excellent

  • 5
    Its a No Brainer

    Posted by STEPHEN NOVAK on Feb 1st 2025

    This is way better than the OEM steel one. If your originally is rusty you can probably forget it sealing. No leaks so far and I doubt ever.

  • 5
    Fit as should .All good

    Posted by TomTeriffic on Oct 24th 2024

    see above