Explorer Rear Ratio

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Dec 17, 2009 | 04:46 PM

HILLBILLY BOB

Thread Starter

Fleet Mechanic

Joined: Apr 2008

Posts: 1,522

Likes: 21

From: HUDSON, FL

Explorer Rear Ratio

A guy has a 99 explorer that he is going to scrap
The vin# is IFMZU34X7XUC17001
on the door plate by axel is a 46 above thecode there is RC21
before the axel code there is RK. Can anyone tell me what ratio it has &
i believe that these are 8.8's aren't they. thanks

Dec 17, 2009 | 06:09 PM

havi

I'll have the Roast Duck

Joined: Jul 2002

Posts: 9,622

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From: Northshore, MN

45 code is 3.55 open diff. I think 46 is 3.73 3golfjack's answer is better.

Dec 17, 2009 | 06:16 PM

LEckart

Posting Guru

Joined: Mar 2003

Posts: 1,734

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From: Kansas City area

Doesn't it have a tag on the center section of the rearend? My Explorer has a tag with the code. Mine is S613E and L73 88 IF27 which decodes to a 3.73 gear.

Dec 17, 2009 | 06:40 PM

3golfjack

Laughing Gas

Joined: Nov 2006

Posts: 1,125

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From: Olive Branch,Ms

Havi is dead on it.

L - Limited Slip Differential
C - Conventional Differential

Code ... Ratio
41 ...... 3.27C
42 ...... 4.10C
43 ...... 3.08C
45 ...... 3.55C
46 ...... 3.73C
D1 ...... 3.27L
D2 ...... 4.10L
D4 ...... 3.73L
D5 ...... 3.55L