NHTSA ID Number: 11022310
Manufacturer Communication Number: IK1400005
TSB/Document Date: 2025-09-02
Summary
Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
H50970007
H50216000
5.5
50970-8
H50216000
6
50970-9
H50216000
6.5
50970-10
H50216000
7
50970-11
H50216000
Rear Axle Seats
7
50973-13
H50973013
H50222000
8
50973-1
H50973001
H50222000
8.5
50973-2
H50973002
H50222000
9
50973-3
H50973003
H50222000
9.5
50973-4
H50973004
H50222000
10
50973-5
H50973005
H50222000
10.5
50973-6
H50973006
H50222000
11
50973-7
H50973007
H50222000
11.5
50973-8
H50973008
H50222000
12
50973-9
H50973009
H50222000
3541729C3
3541730C3
12.5
50973-10
H50973010
H50222000
13
50973-15
H50973015
H50222000
13.5
50973-14
H50973014
H50222000
14
50973-16
H50973016
H50222000
Rear Leaf Spring Seat Information
Degree
Part Number
1
520339C2
2
495364C1
3
3552912C1
6
3518107C1
Center Bearing Brackets
Here is a list of commonly used Center Bearing Brackets.
If the center bearing bracket your truck was built with is not on this list it has a different width or offset. If you need a longer bracket you will need a
case file.
If you need a shorter bracket you can move the prop shaft up to the desired angle, then mark and drill new holes in the existing bracket.
Common Center Bearing Brackets
*Min Height for Clearance = 3.00"
B"
Length
C = 0°
Angle
2.50
C = 3°
Angle
C = 6°
Angle
997986C1
547681C1
3.00
3517669C1
484963C1
2031864C1
3.30
1613108C1
484964C1
3579785C1
3.60
3527899C1
484965C1
3573130C1
3.90
3573124C1
484966C1
3573131C1
4.20
3573125C1
484967C1
484975C1
4.50
546260C1
484968C1
3573132C1
4.80
3573126C1
483973C1
1689958C1
5.10
3573127C1
484969C1
537433C1
5.40
3573128C1
485877C1
3573133C1
5.70
3573129C1
484970C1
484976C1
6.00
1620406C1
484971C1
3530579C1
6.30
1688060C1
484972C1
483971C1
6.60
3530576C1
484973C1
3530580C1
6.90
3517670C1
484974C1
571510C1
7.20
3579776C1
494657C1
496866C1
7.50
3579777C1
485157C1
494667C1
7.80
3527900C1
485158C1
483972C1
8.10
3741398C1
494658C1
494668C1
8.40
3527901C1
494659C1
494663C1
8.70
3527902C1
494660C1
494669C1
9.00
3530577C1
494661C1
494664C1
9.30
3527903C1
3527904C1
494670C1
9.60
3530578C1
3527905C1
3530581C1
9.90
3579778C1
494662C1
494670C1
10.20
3579779C1
3527906C1
2037330C1
10.50
3579780C1
998235C1
2037330C1
10.80
3579781C1
546173C1
3530582C1
11.10
3579782C1
2003081C1
11.40
3579783C1
3527907C1
11.70
3579784C1
594555C1
12.00
2025234C1
546707C1
12.30
2025269C1
546345C1
12.60
3527908C1
12.90
13.50
3527909C1
3741400C1
3527910C1
13.80
546708C1
14.10
3527911C1
14.40
3527912C1
14.70
3741401C1
15.00
3741402C1
15.30
3741403C1
15.60
3741404C1
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TSB/Document ID: IK1400005
Replacement Service Bulletin Number:
MFR Communication Date: 2025-08-25
MFR Internal Campaign ID/Software Version: IK1400005
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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