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Moroso 9877M Mag-Tune 8mm Spark Plug Wires Big Block Chevy GMC

(Chevrolet Camaro 1967-72, Corvette 1965-74, Impala 1965-74, Malibu 1973-74, Chevelle 1965-73, C10 Pickup 1966-74, Caprice 1966-74 + 40 more models)

Manufacturer

Picture for manufacturer Moroso

Part Number

9877M
13 reviews
Sale Price

$38.57

Estimated ship date Friday, November 20

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Moroso 9877M Mag-Tune spark plug wire set is engineered specifically for Big Block Chevy and GMC engines, delivering reliable ignition performance with spiral core technology. These professional-grade plug wires feature an 8mm diameter construction with a durable black sleeve that resists heat, oil, and abrasion in demanding engine compartments.

Key Features:

  • Spiral core design reduces electromagnetic interference (EMI) while maintaining excellent spark energy transfer
  • 90-degree plug boots provide clearance in tight valve cover applications
  • Socket-style terminals ensure secure connections at both spark plug and distributor
  • 8mm diameter silicone jacket withstands extreme temperatures and engine chemicals
  • Pre-assembled complete kit includes all wires needed for Big Block Chevy/GMC V8 engines
  • Low-resistance core maintains consistent spark delivery across all RPM ranges

This complete wire set eliminates the guesswork of custom wire routing with factory-style fitment for Big Block applications. The Mag-Tune series is designed for street performance, muscle car restorations, and daily drivers requiring dependable ignition components that exceed OEM specifications.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1965-74, Impala 1965-74, Malibu 1973-74, Chevelle 1965-73, C10 Pickup 1966-74, Caprice 1966-74, El Camino 1966-74, Suburban 1966-67, Nova 1969-72, K10 Pickup 1966-74, C20 Pickup 1966-74 + 35 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

Female/Socket

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

Wow talk about FAST shipping...I placed the order...and the door bell rang for delivery!!! The electronic points and coil when in the FJ 4o in just a few minutes and work perfectly...THANKS so much! Larry in Montana

Easy

so far so good waiting for merchandise

Very easy and quick

So far so good

It was fast and easy. I would definitely do business with again.

Quick delivery of the correct replacement solenoid/starter for my 15 year old Toyota; good set of installation instructions.

I bought from them for the first time because the price was the lowest listed on Amazon. They shipped it fast and I am happy. I will buy again.

SHOPPED THE PRICE EVERYWHERE. BEST DEAL ON THE WEB!

hope this is what I'm looking for

Good so far

First time buyer, love this site

I was very happy with Autoplicity and my order of the MMRAD-MIA-90X Mishimoto radiator for my Miata. I am in the process of building a Spec-Miata for racing and trying to keep the costs down. I found Autoplicity to have the best prices on the net. I received the rad real quick. There was a problem with the radiator but the guys at Autoplicity were easy to work with and I am expecting the new radiator in a week or so.

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