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Description
5.0L Ford Foxbody EFI Main Harness 558-128This harness is for fuel injected small block ford engines, such as 5. 0L, or 5. 8L Windsor powerplants. Plug and play ignition capability with Dual Sync and HyperSpark Distributors, ignition adapter 558 305 is required for applications with a TFI distributor. The 5. 0L Ford main harness is pre terminated with Ford PWM IAC connector, for the OEM PWM idle air control motor commonly found on late 80's and early 90's engines. Compatible with Holley EFI
This harness is for fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor powerplants. Plug and play ignition capability with Dual Sync and HyperSpark Distributors, ignition adapter 558-305 is required for applications with a TFI distributor. The 5.0L Ford main harness is pre-terminated with Ford PWM IAC connector, for the OEM PWM - idle air control motor commonly found on late 80's and early 90's engines. Compatible with Holley EFI Dominator, HP, and Terminator X and X Max ECU's.
Features:
- Designed for use with fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor powerplants.
- Plug and play ignition capability with Dual Sync and HyperSpark Distributors, for ignition adapter 558-305 is required for applications with a TFI distributor
- Compatible with Holley EFI Dominator, HP, and Terminator X and X Max ECU’s
- Comes pre-terminated with Ford PWM IAC connector, for OEM PWM – idle air control motors
- For use with OEM Ford fuel injectors, use injector harness 558-209.
- For TFI distributor applications, use ignition adapter 558-305
Specs:
| Brand | Holley EFI |
|---|---|
| Emission Code | 4 |
| Grade Type | Performance |
| Harness Application | Ford |
| Harness Type | Main |
| Product Type | 5.0L Ford Main Harness |
| Warning | California Proposition 65 |
| Part Number | 558-128 |
Application:
- NOT INTENDED AS AN OEM REPLACEMENT!
- Fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor
- Plug and play ignition capability with Dual Sync and HyperSpark Distributors
- Compatible with Holley EFI Dominator, HP, and Terminator X and X Max ECU's
- For use with OEM Ford fuel injectors, use injector harness 558-209
- Ignition adapter 558-305 is required for applications with a TFI distributor
- The main harness supports all the primary engine sensors, fuel and ignition for eight cylinder engines, the #1 wideband oxygen sensor, and the first four programmable input and output channels. There are two connectors for this harness designated as “J1A” (pin designations below that start with an A) and “J1B” (pin designations below that start with a B).
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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- 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
4.1 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Chew King Supreme Chew Toy
Color: B) Medium 3" Ball
So far, freaking amazing. This ball is awesome. I have a 90 lb American Bulldog. Like other reviews. Lot of " indestructible balls" lasted minimum time. Not this one. She even took it to bed with her
I bought the 3 inch ball, not the 4 inch ball. The 3 inch ball works amazingly for a large Dog. Yes the 4 inch would be better. So in my opinion, either ball would be fine.
As others also said. This ball keeps a active Dog busy for hours. Love to play catch. Love frozen peanut butter in it.
One last thing. The price is amazing. I don't see needing to buy another, unless it is lost, because this is made to last. We couldn't be happier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
★★★★★ 5
Malinois proof
Color: B) Medium 3" Ball
So far this has held up great. My Malinois who has destroyed nearly every ball I’ve gotten her, this one has lasted over 3 weeks without a dent, compared to some that don’t even last a day lol. Although the medium size is a little too big for her liking she still plays with it. It’s very durable and I like the middle part for engagement as well. I would recommend if you have a dog who destroys every ball possible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Actually Durable
Color: B) Medium 3" Ball
One of the few "heavy duty" toys that my pittie hasn't destroyed after a couple of weeks. Most of them last two days. She's an absolute beast so I'm confident if she can't destroy it, few dogs can.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 1
Not for aggressive chewers!
Color: H) Infinity Ring, Color: H) Infinity Ring
Not for aggressive chewers! Done for in about two minutes. I unboxed this and tugged with my Mal for a but then let her have it. Within minutes she had chewed through it. Not worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
★★★★★ 4
Dog ball
Color: A) Small 2.5" Ball
My dog enjoys but smaller than expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
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