SKU: 88525086909

7.3L Powerstroke Engine Harness w/ California Emissions - 2000-2001 Ford F-Series

Sale price$140.82 Regular price$156.47
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Description

7.3L Powerstroke Engine Harness w/ California Emissions - 2000-2001 Ford F-Series7. 3L Powerstroke Engine Harness 19992001 Ford F Series Automatic Transmission California Emissions Built After 10 25 1999 Part Number: YC3Z 12B637 BA Electrical issues on a late 992001 7. 3L can quickly turn into a nightmareinjector drop out, rough running, intermittent no starts, or random sensor faults. In many cases, the root cause is a failing engine harness. This OEM style Engine Harness (YC3Z 12B637 BA) is designed specifically for California

7.3L Powerstroke Engine Harness – 1999–2001 Ford F-Series

Automatic Transmission | California Emissions | Built After 10/25/1999
Part Number: YC3Z-12B637-BA

Electrical issues on a late ’99–2001 7.3L can quickly turn into a nightmare—injector drop-out, rough running, intermittent no-starts, or random sensor faults. In many cases, the root cause is a failing engine harness.

This OEM-style Engine Harness (YC3Z-12B637-BA) is designed specifically for California emissions trucks with automatic transmissions built after 10/25/1999, ensuring correct connections, proper routing, and reliable communication between your injectors, sensors, and PCM.


🔥 Key Features

  • Correct Fit for Late 1999–2001 California Emissions Trucks
    Designed for trucks built after 10/25/1999

  • Automatic Transmission Specific

  • OEM-Style Direct Replacement
    Matches factory connectors, routing, and layout

  • Restores Injector & Sensor Performance
    Fixes issues caused by damaged or aging wiring

  • Eliminates Electrical Gremlins
    Helps resolve misfires, no-start conditions, and intermittent faults

  • Durable Engine Bay Construction
    Built to handle heat, vibration, and long-term use

  • Plug-and-Play Installation


🛠️ Why Replace Your Engine Harness?

Over time, factory harnesses break down due to:

  • Heat cycling

  • Brittle insulation

  • Oil contamination

  • Corroded or loose connectors

Replacing the harness restores proper signal integrity across your entire engine system, improving reliability and drivability.


🚚 Fitment

  • 1999–2001 Ford F250 7.3L Powerstroke

  • 1999–2001 Ford F350 7.3L Powerstroke

Requirements:

  • Automatic transmission

  • California emissions

  • Built after 10/25/1999


⚠️ Fitment Notes

  • Will NOT fit Federal emissions trucks

  • Will NOT fit manual transmission applications

  • Build date verification is required for proper fitment


If you’re chasing electrical issues on a late-model 7.3 or doing a proper engine refresh, this YC3Z-12B637-BA engine harness restores factory reliability and ensures your truck runs the way it should.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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]
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SKU: 88525086909

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Tatacrio
San Leandro, US
★★★★★ 5
Best liner socks EVER
Size: Medium, Color: (348) Silica Green / Silica Green / Hydro Green
I have them in every color and used to get them from Sams, but they stopped selling them and I was lucky to find them on Amazon. Got all colors again. They stay, it's all I'm gonna say! And don't show in any of my tennis shoes. Absolutely love them and wear them until they get holes. They last a LONG time too. They're on the thin side and my foot loves them because they tend to get hot. There's no shrinking, they wash great with exception of the white ones I couldn't manage to keep white - they turned a bit greyish.
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Reviewed in the United States on January 4, 2026
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Christy F
Charlottesville, US
★★★★★ 5
Great socks
Size: Medium, Color: Pink - 647
Well-made and comfortable to wear. Great for golf and other outdoor activities. Like them because they do not show above shoes.
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Cait E
Grantham, US
★★★★★ 5
These ACTUALLY stay put all day long - I was skeptical, but am so glad I took a chance on these
Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock
I was so skeptical about whether these would stay on my feet all day without sliding down into my shoe - I’ve tried so many socks in the past with the silicone strip on the heel which failed. I’ve owned these for a couple months now and they have never slipped down - they stay put all day! I love the variety of colors to choose from, and the value per pack is great since six pairs come per pack (I thought it was only three when I first purchased and was pleasantly surprised by the additional pairs). They also have perfect thickness - not too warm to wear during the summer months with sneakers; I live in a tropical climate, though, so I’m not sure how they will do in cooler climates. I’ve washed each pair once or twice and the color and quality of the silicone has stayed so far (knock on wood). Overall: high recommend based on my experience so far!
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Maggie Vega
Los Angeles, US
★★★★★ 5
Great fit!
Size: Medium, Color: (403) Washed Navy / Washed Navy / Blue Smoke
Great quality!
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Kira Stewart
Whiting, US
★★★★★ 5
My favorite socks
Size: Medium, Color: (659) Fuchsia Dusk / Fuchsia Dusk / Tourmaline Pink
Very comfortable. True to size. Moisture wicking
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Reviewed in the United States on April 25, 2026

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