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JEGS 8.5mm Black Ultra Pow'r Wires Small Block Chevy Under Headers

555-402021

made in usa

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8.5mm Black Ultra Pow'r Wires Small Block Chevy Under Headers
$34.99
$31.99
SAVE $3.00
More than 10 available
8.5mm Black Ultra Pow'r Wires
  • Small Block Chevy Under Headers
  • 90° HEI Distributor Terminals
  • 90° Plug Terminals
  • Includes:
    • Wire Markers
    • Wire Separators
    • Dielectric Grease
  • Ships
    QTY

    Items You May Also Consider

    Does JEGS 402021 fit your vehicle?

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    1967 GMC K25/K2500 PICKUP

    • Liter: 4.6
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 283
    • Engine Type: V8 ( 4.6L / 283 )
    • Engine Vin: -

    1971 CHEVROLET TOWNSMAN

    • Liter: 6.6
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 400
    • Engine Type: V8 ( 6.6L / 400 )
    • Engine Vin: -

    1973 CHEVROLET CAPRICE

    • Liter: 6.6
    • SubModel: ESTATE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 400
    • Engine Type: V8 ( 6.6L / 400 )
    • Engine Vin: R

    1969 CHEVROLET CHEVELLE

    • Liter: 5
    • SubModel: CONCOURS ESTATE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 307
    • Engine Type: V8 ( 5L / 307 )
    • Engine Vin: DC

    1973 CHEVROLET CAPRICE

    • Liter: 5.7
    • SubModel: ESTATE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 350
    • Engine Type: V8 ( 5.7L / 350 )
    • Engine Vin: H

    1971 CHEVROLET CHEVELLE

    • Liter: 5
    • SubModel: CONCOURS ESTATE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 307
    • Engine Type: V8 ( 5L / 307 )
    • Engine Vin: -

    1971 GMC K15/K1500 SUBURBAN

    • Liter: 5
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 307
    • Engine Type: V8 ( 5L / 307 )
    • Engine Vin: H

    1971 GMC C15/C1500 SUBURBAN

    • Liter: 5
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 307
    • Engine Type: V8 ( 5L / 307 )
    • Engine Vin: H

    1963 CHEVROLET BISCAYNE

    • Liter: 4.6
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 283
    • Engine Type: V8 ( 4.6L / 283 )
    • Engine Vin: -

    1973 GMC K35/K3500 PICKUP

    • Liter: 5
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 307
    • Engine Type: V8 ( 5L / 307 )
    • Engine Vin: X

    1970 CHEVROLET EL CAMINO

    • Liter: 5
    • SubModel: CUSTOM
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 307
    • Engine Type: V8 ( 5L / 307 )
    • Engine Vin: B

    1973 CHEVROLET CHEVELLE

    • Liter: 5.7
    • SubModel: DELUXE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 350
    • Engine Type: V8 ( 5.7L / 350 )
    • Engine Vin: K
    402021 is rated 3.8 out of 5 by 5.
    Rated 5 out of 5 by from Quaility wires I love these wires and i love the price. Quaility is also outstanding.
    Date published: 2021-01-18
    Rated 4 out of 5 by from Great wires I just needed one more longer wire but other than that great wires
    Date published: 2020-12-10
    Rated 4 out of 5 by from Decent product When ordered these wires reviews were good. They look good and the price was right. Agree to all of the above. These are “fitted” plug wires but did not come marked or any way of showing which plug they might go to. Nothing I have ordered from JEGS has had an instruction sheet of any kind can be frustrating for a novice to complete these builds without the instructions.
    Date published: 2017-12-05
    Rated 4 out of 5 by from Wires Well made, however I feel they were a bit short for my application. Over all doing the job well.
    Date published: 2016-01-13
    Rated 2 out of 5 by from Looks great, disappointed. Alright, I've had these wires for about a year now but I've had nothing but small issues that have just kept adding up. Simply put, they do not stay on the plugs. I've experimented with 3 different sets of plugs- I've burned one boot from it coming loose and replaced the boot with a spare I had that came with my coil+dizzy. I've had other plugs randomly come loose and cause the engine to run rough or fowl plugs, which then tricks my EFI into running poorly. I'm done messing with these and ordering MSD.
    Date published: 2020-12-25
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    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.