Original Parts Group Logo
US & Canada Phone Number 1-800-243-8355
International Phone Number 1-562-594-1000
Select Your Vehicle

Selecting your vehicle's make, model, and year allows us to display only parts and items specific to your car's model and year.

 Monte Carlo Holiday Sale Savings Promotion Banner
Part fits the following years:1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988

Auburn Gear

1978-88 Monte Carlo Differential, Ected

Part# C240039


Mfg# 545003

Be the First to Review

SAVE: $75.96 Retail: $835.95

OPGI Price: $759.99


Part Type: (P) High Performance, designed to improve performance
Years: Sold As: EACH
2017 Monte Carlo Catalog Page: 202
2018 Monte Carlo Catalog Page: 204


’78-88 El Camino, Malibu and Monte Carlo

Get the best of both types of differentials

  • NOTE1: This high-performance item is not eligible for any further discounts or promotional pricing.
  • SHIP NOTE: This item is SPECIAL ORDER and will be drop-shipped from the manufacturer. more info

ECTED, the dual purpose differential. It stands for Electronically Controlled Traction Enhancing Differential. This is the most advanced differential available today—in normal driving situations it acts like a standard limited slip differential, but when the switch is flipped to "on", the advanced electromagnet is activated and it turns the differential into a full-on locker style differential. This is outstanding for a dual purpose street/strip vehicle, because in normal street driving it's a regular cone/clutch-type limited slip, while at the track you flip the switch on and it acts like a locker with equal power to both rear wheels at all times, no matter what. Leave it to Auburn to come out with this heavy-duty, advanced ECTED differential for Chevrolet rear ends.

Fits 10-bolt with 8.5"/8.6" ring gear, 2.73 and up gears, with a 28-tooth Side Gear

Make & ModelYear RangeApplication Details
Buick Grand National1983-1987
Buick Regal1983-1987
Buick T-Type1983-1987
Chevrolet Chevelle1971-1977
Chevrolet El Camino1971-1977
Chevrolet El Camino1978-1988
Chevrolet Malibu1978-1988
Chevrolet Monte Carlo1970-1977
Chevrolet Monte Carlo1978-1988
California Prop 65 Icon WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Ships direct from manufacturer.
Point Coins Earn 759 points more info
Switch to Mobile Site »

Original Parts Group

Special Deals!
Never Miss A Promotion
If you see this, please contact your IT department and ask them to unblock www.opgi-static.com