Outdated Internet Browser Detected

It appears that the Internet Browser you are using to connect to SummitRacing.com is outdated and insecure. To continue to use SummitRacing.com, you must upgrade your browser to a newer, secure version. Use these links to help you upgrade your browser.

In-Store Pickup Location Close

Eaton Detroit Truetrac Differentials 912A556

Detroit Locker 912A556 - Eaton Detroit Truetrac Differentials

Image is a representation of this item.
Actual item may vary.

Loading media


In progress
Get Free Shipping with Your Order over $99!

Differential, Eaton Detroit Truetrac, 28-Spline, GM, 8.5 in., Rear, Each

Estimated Ship Date: Today Would you rather pick it up? Select Location

  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight fees. Valid on orders shipped in the contiguous United States.

Manufacturer's Part Number: 912A556
Summit Racing Part Number: DTL-912A556

Aftermarket Carrier Style: Detroit Truetrac
Cover Bolts: 10
Axle Shaft Spline Quantity: 28
Manufacturer of Axle: GM
Carrier Material: Steel
Quantity: Sold individually.
Notes: 8.5/8.6 in. Eaton differentials require special bearings. For axles with small bearing bores (race O.D. of 2.89 in.), usually found on vehicles prior to 1999, bearing LM102949 and race LM102911 are required. For axles with large bearing bores (race O.D. of 3.06 in.), usually found on vehicles from 1999 to present, bearing LM603049 and race LM603012 are required.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

These Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like an open differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant.

Warranty

Most Helpful Reviews Review this Product

7 Customer Reviews for Detroit Locker 912A556 - Eaton Detroit Truetrac Differentials

Average Customer Review

5 Star

(7)

4 Star

(0)

3 Star

(0)

2 Star

(0)

1 Star

(0)
+See All 7 Reviews

maximum traction

Summit RacingSummit Racing Verified Purchase

worked great in my 86 suburban for trail riding and muddy situations

0 of 0 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: BOB from IL

Date: October 14, 2014

Appearance
Ease of Installation
Price/Value
Quality

So Far Great

Summit RacingSummit Racing Verified Purchase

Put it in 2 weeks ago. I am putting out 465 rwhp and no problems. It has no noise in turns. Locks up tight. Great Price for a posi unit. Lower rating on ease of installation has nothing to do with the unit but the installation into the GM Differential. Will buy again for next project.

0 of 0 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: RICK from OK

Date: September 18, 2014

Appearance
Ease of Installation
Price/Value
Quality

Best posi

Summit RacingSummit Racing Verified Purchase

Replaced auburn cone style cause could only hit 2.1 60 foots. Back in the 1.8s works great but need special bearings for older housings. Did have to reset backlash so doesn't hurt to have a shim kit ready.

0 of 0 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: DANIEL from MN

Date: September 01, 2014

Appearance
Ease of Installation
Price/Value
Quality

Great fit

Summit RacingSummit Racing Verified Purchase

Solved my problem of incorrect carrier for the new. Ring and pinion gear I purchased

0 of 0 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: ALAN from Australia

Date: June 19, 2014

Appearance
Ease of Installation
Price/Value
Quality

Eaton Detroit Truetrac Differentials 912A556

Summit RacingSummit Racing Verified Purchase

A great bit of kit, fitted with no problems at all & works well.

0 of 0 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: SIMON from United Kingdom

Date: May 15, 2014

Appearance
Ease of Installation
Price/Value
Quality

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

Back To Results
Email this page Close
Close