NHTSA ID Number: 10130385
Manufacturer Communication Number: sbw1505
TSB/Document Date: 2018-03-13
Summary
39MT Starter Pinion Teeth Change for 2016 DD13/15/16
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TSB/Document ID: sbw1505
Replacement Service Bulletin Number:
MFR Communication Date: 2015-12-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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39MT Starter Pinion Teeth Change for 2016 DD13/15/16
Engines (GHG17)
> Constellation
Heritage
> 4700 Models
4800 Models
> 4900 Models
> 5700 Models
5900 Models
> 6900 Models
15-5
Western Star
Service Bulletin
General Information
Beginning January 1, 2016, to improve starter engagement, the number of teeth on 2016 DD13/15/16 engines
and applicable 39MT starters has been reduced. On 2016 and newer DD13/15/16 engines, the ring gears have
150 teeth, and the starters have 11 teeth. 2015 and older engines have ring gears with 160 teeth and starters
with 12 teeth. Starters for 2015 engines must not be used on 2016 engines, and vice versa.
NOTICE
Installing the wrong starter on an engine will result in significant damage to the starter and ring gear,
requiring replacement.
Delco Remy is labelling 39MT starters according to the correct engine application to assist in quick
identification. See Fig. 1 and Fig. 2. An identification label will be affixed to the starter housing, and another
beside the part number label on the starter packaging.
NOTE: Starters already manufactured and currently in circulation will not be retroactively labeled.
Before replacing the starter, always verify it is the correct one for the engine.
12/17/2015
f151206
Fig. 1, Label for 39MT Starters for GHG14 and Earlier
(2015 and Older) Engines
12/17/2015
f151205
Fig. 2, Label for 39MT Starters for GHG17 (2016 and
Newer) Engines
PartsPro will list the correct replacement starter based on the vehicle’s engine. See Table 1 for differentiating
between starters.
Engine
2015 and older
(EPA10, GHG14)
DD13/15/16
2016 and newer
(GHG17) DD13/15/16
39MT Starter Part Numbers by Engine
Delco Remy Part
Number Alert Label
Description
Number
of Teeth
Color
39MT fixed flange OE, 12-tooth pinion for Detroit
8201022
12
Yellow
engines with 160-tooth ring gear
39MT all-makes service model, 12-tooth pinion for
8200434
12
Yellow
Detroit engines with 160-tooth ring gear
39MT remanufactured service model, 12-tooth
8300084
12
Yellow
pinion for Detroit engines with 160-tooth ring gear
39MT fixed flange OE, 11-tooth pinion for Detroit
8201004
11
Blue
engines with 150-tooth ring gear
39MT all-makes service model, 11-tooth pinion for
61000704
11
Blue
Detroit engines with 150-tooth ring gear
Table 1, 39MT Starter Part Numbers by Engine
Western Star Service Bulletin, December 2015
Page 1
15-5
Western Star
Service Bulletin
39MT Starter Pinion Teeth Change for 2016 DD13/15/16
Engines (GHG17)
> Constellation
Heritage
> 4700 Models
4800 Models
> 4900 Models
> 5700 Models
5900 Models
> 6900 Models
Warranty
This is an informational bulletin only. Warranty does not apply.
Page 2
Western Star Service Bulletin, December 2015
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