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Moroso 9866M Mag-Tune Spark Plug Wires 8.0mm HEI 90 Degree Black Big Block Chevy

(Chevrolet Corvette 1974, Impala 1974-76, C1500 1990-93, C10 Pickup 1974, Caprice 1974-76, C10 1975-80, El Camino 1974-75, C3500 1988-95 + 53 more models)

Manufacturer

Picture for manufacturer Moroso

Part Number

9866M
11 reviews
Sale Price

$39.54

4 left at this price

delivery box

Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The Moroso 9866M Mag-Tune spark plug wire set is engineered for high-performance big block Chevy and GMC engines equipped with HEI distributors. These professionally assembled plug wires feature a spiral core design that provides excellent EMI/RFI suppression while delivering consistent spark energy to each cylinder.

Key Features:

  • 8.0mm diameter high-temperature silicone jacket for superior heat resistance and durability
  • 90-degree spark plug boots for tight clearance applications and professional appearance
  • Spiral core construction reduces electrical interference while maintaining low resistance
  • HEI-style distributor terminal for proper fit on factory and aftermarket HEI distributors
  • Black silicone jacket resists oil, fuel, and chemicals while providing a clean, stealthy look
  • Complete kit includes all wires needed for big block Chevy V8 engines

Moroso's Mag-Tune wires are designed for street performance and race applications where reliable ignition is critical. The quality construction ensures long service life even in high-heat engine compartments, making them an excellent choice for muscle cars, street rods, and performance trucks running big block Chevrolet power.

Products specifications

Fits

Chevrolet Corvette 1974, Impala 1974-76, C1500 1990-93, C10 Pickup 1974, Caprice 1974-76, C10 1975-80, El Camino 1974-75, C3500 1988-95, K10 Pickup 1974, C20 Pickup 1974, K10 1976, 1979-80, G20 1976, K20 1976-78, 1980 + 48 more models

Assembled

Yes

Coil Wire Included

Yes

Conductor Style

Spiral core

Diameter (mm)

8.00mm

Distributor Boot Color

Black

Distributor Boot Material

Silicone

Distributor Terminal Ends

Male/HEI

Notes

Designed to be routed under headers.

Quantity

Sold as a kit.

RFI Suppression

Yes

Spark Plug Boot Color

Black

Spark Plug Boot Ends

Two 90 degree

Spark Plug Boot Material

Silicone

Wire Color

Black

Found it cheaper elsewhere but can't complain.

price is reasonable great web site don't have to go through an act of congress to find what you need. Thank you.

Web site easily navigated

Fast

I ordered my K&N cold air intake order number 17133<br>From autoplicity for almost half price compared to other sites online. I will continue my purchases here n stop my searches elsewhere. And delivery time is fast!

ASAP tracking

fast and easy simple as that

Easy to use

Had exactly what I was looking for at the best price on the net. Shipped next day. Fuel Pressure Regulator was as described and met my needs.

Easy and fast. Order arrived very fast. Thanks.

This was my first order with Autoplicity. Their prices were great, and the ordering process very easy. I was a little frustrated at first, as the order didn't arrive as expected. When I called, it took a little work, but I finally got the info that it was shipping from the manufacturer, and did get the tracking info. The parts arrived when tracking said it should. Would I place another order with Autoplicity? Short answer is yes!

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