Exhaust Hanger Insulators

The procedures for removing and installing the various rubber exhaust system supports may be determined by using the removal and installation procedures for the applicable component, the illustrations provided and the torque specifications in this section. Use a soap solution to ease installation of rubber insulators.

Do not use petroleum-based lubricants such as grease or WD-40®.

Exhaust System, Bronco, F-150, F-250, F-350 Regular Cab, SuperCab and Chassis Cab, 4x2 and 4x4, 4.9L SFI and Bronco 5.8L Engines

Item	Part Number	Description
1	5F250	Catalytic Converter
2	375636-S309	Nut, Catalytic Converter-to-Exhaust Manifold
3	389112-S2	Stud, Catalytic Converter-to-Exhaust Manifold
4	9J454	Air Inlet Tube
5	5230	Muffler
6	N804034-S	Clamp
7	5E287	Catalytic Converter Heat Shield, Front
8	N605905-S103	Bolt, Front Heat Shield
9	N803714-S102	Nut, U-Lock
10	N800295-S102	Nut, U-Lock
11	5K283	Catalytic Converter Heat Shield, Rear
12	5F250	Catalytic Converter
13	N605905-S1023	Bolt, Rear Heat Shield
14	N647098-S	Rivet
15	5A246	Muffler Assembly Bracket
16	N620481-S2	Nut, Support Bracket
17	5A212	Muffler Extension Pipe
18	N803714-S102	Nut, U-Lock
A	—	Tighten to 34-46 Nm (25-34 Lb-Ft)
B	—	Tighten 40-50 Nm (30-37 Lb-Ft)
C	—	Tighten to 54-71 Nm (40-52 Lb-Ft)
D	—	Tighten to 22-28 Nm (16-21 Lb-Ft)
E	—	Tighten to 17-23 Nm (13-17 Lb-Ft)

Exhaust System, Bronco, F-150, F-250, F-350, 4.9L, 5.0L and 5.8L Engines Under 8500 GVW

Item	Part Number	Description
1	5260	Exhaust Outlet Pipe Frame Bracket
2	5230	Muffler
3	N605803-S2	Bolt
4	5C226	Gasket
5	N802641-S2	Flag Nut
6	N620481-S2	Nut
A	—	Tighten to 17-23 Nm (13-17 Lb-Ft)
B	—	Tighten to 34-46 Nm (25-34 Lb-Ft)

Exhaust System, Bronco, F-150, F-250, F-350 Regular Cab and SuperCab, 4x2 and 4x4, 5.0L, 5.8L and Bronco MFI Engine

Item	Part Number	Description
1	5F250	Catalytic Converter Assembly
2	391104-S2	Stud, Catalytic Converter-to-Exhaust Manifold
3	375636-S309	Nut, Catalytic Converter-to-Exhaust Manifold
4	9J454	Air Inlet Tube
5	N804034-S	Clamp
6	5230	Muffler
7	5E287	Catalytic Converter Heat Shield, Front
8	N605905-S103	Bolt, Front Heat Shield
9	N800295-S102	Nut, U-Lock
10	5K283	Catalytic Converter Heat Shield, Rear
11	5F250	Catalytic Converter
12	N647098-S	Rivet
13	5A246	Muffler Assembly Bracket
14	N620481-S2	Nut, Support Bracket
15	N803714-S102	Nut, U-Lock
A	—	Tighten to 40-50 Nm (30-37 Lb-Ft)
B	—	Tighten to 34-46 Nm (24-34 Lb-Ft)
C	—	Tighten to 54-71 Nm (40-52 Lb-Ft)
D	—	Tighten to 22-28 Nm (16-21 Lb-Ft)
E	—	Tighten to 17-23 Nm (13-17 Lb-Ft)
F	—	5.8L California Only
G	—	5.0L 50 States 5.8L 49 States (No Air Inlet Tube on California 5.8L)

Exhaust Systems, F-250, F-350, F-Super Duty Regular Cab, SuperCab and Chassis Cab, 4x2 and 4x4, 5.8L MFI Engine with Manual Transmission, and Chassis Cab with C-6 Automatic Transmission

Item	Part Number	Description
1	391104-S2	Stud, 7/16-14-14 x 2.55
2	375636-S309	Nut, 7/16-14
3	5246	Exhaust Inlet Pipe
4	5260	Exhaust Outlet Pipe Frame Bracket
5	5260	Exhaust Outlet Pipe Frame Bracket
6	5230	Muffler
7	5277	Muffler Pipe Bracket
8	W611633-S2	Screw, M8-1.25 x 14
9	N807703-S	U-Bolt Clamp
10	5E212	Catalytic Converter
11	N647098-S	Rivet, M10 x 30
12	5260	Exhaust Outlet Pipe Frame Bracket
13	N620481-S2	Nut, M8-1.25
14	5B266	Exhaust Converter Inlet Pipe Gasket
15	N620482-S2	Nut, M10-1.5
A	—	Install Short Threaded End into Manifold, Tighten to 41-54 Nm (30-40 Lb-Ft)
B	—	Tightening Sequence: Tighten RH Nut Halfway, Tighten LH Nut to 34-46 Nm (25-34 Lb-Ft), Tighten RH Nut to 34-46 Nm (25-34 Lb-Ft)
C	—	At Assembly, Lubricate Insulators with Lubricant ESE-M99B144-A (5%, 200 Parts Water to 1 Part Lubricant). Do Not Use Oil or Grease.
D	—	Model Dependent
E	—	Tighten to 17-23 Nm (13-17 Lb-Ft)
F	—	Tighten to 54-71 Nm (40-52 Lb-Ft)

Exhaust System, F-250, F-350 5.8L MFI and 7.5L MFI Engine, Manual Transmission, over 8500 GVW

Item	Part Number	Description
1	5246	Exhaust Inlet Pipe
2	5F235	Air Inlet Tube
3	5260	Exhaust Outlet Pipe Frame Bracket
4	5A231	Muffler Inlet/Outlet Pipe Yoke Clamp
5	N623332-S2	U-Nut, M6-1.0
6	N605892-S2	Bolt, M6-1.0 Hex Flange
A	—	Tighten to 54-71 Nm (40-52 Lb-Ft)
B	—	Tighten to 50-68 Nm (37-50 Lb-Ft)

Exhaust System, Typical, F-250, F-350, F-Super Duty Regular Cab, SuperCab and Chassis Cab, 4x2 and 4x4 and 7.5L MFI Engine, over 8500 GVW

Item	Part Number	Description
1	5F235	Air Inlet Tube
2	5260	Exhaust Outlet Pipe Frame Bracket
3	5260	Exhaust Outlet Pipe Frame Bracket
4	5230	Muffler
5	5A231	Muffler Inlet/Outlet Pipe Yoke Clamp
6	5246	Exhaust Inlet Pipe
7	5A212	Muffler Inlet Pipe
8	N647098-S	Rivet
9	5260	Exhaust Outlet Pipe Frame Bracket
10	N620481-S2	Nut, Muffler Support
A	—	Tighten to 54-71 Nm (40-52 Lb-Ft)
B	—	Tighten to 50-68 Nm (37-50 Lb-Ft)
C	—	Tighten to 17-23 Nm (13-17 Lb-Ft)

Exhaust System, Typical, F-350 Crew Cab, 4x2 and 4x4, 5.8L MFI, 7.5L MFI (Same as F-350 Except as Shown)

Item	Part Number	Description
1	N620481-S2	Nut, Muffler Inlet Pipe Support
2	5260	Exhaust Outlet Pipe Frame Bracket
3	N807703-S	Clamp
4	5A231	Muffler Inlet/Outlet Pipe Yoke Clamp
5	5A212	Muffler Inlet Pipe
A	—	Tighten to 54-71 Nm (40-52 Lb-Ft)
B	—	Tighten to 50-68 Nm (37-50 Lb-Ft)

F-Super Duty Motorhome Chassis Vehicles, 7.5L MFI

Item	Part Number	Description
1	9430	Exhaust Manifold
2	387431	Stud, Exhaust Manifold-to-Exhaust Inlet Pipe
3	375636-S7	Nut, Exhaust Manifold-to-Exhaust Inlet Pipe
4	5260	Exhaust Outlet Pipe Frame Bracket
5	N620481-S50	Nut, Muffler Inlet Pipe Support
6	5230	Muffler
7	605801	Bolt, Outlet Pipe Support
8	357636-S	Nut, Outlet Pipe Support
9	—	Heat Shield (Part of 5230)
10	5260	Exhaust Outlet Pipe Frame Bracket
11	N807703-S	Clamp
12	5246	Exhaust Inlet Pipe
13	5260	Exhaust Outlet Pipe Frame Bracket
14	N60584	Bolt, Muffler Support
15	N802641-S2	Nut, Muffler Support
A	—	Tighten to 41-54 Nm (30-40 Lb-Ft)
B	—	Tighten to 34-46 Nm (25-34 Lb-Ft)
C	—	Tighten to 17-23 Nm (13-17 Lb-Ft)
D	—	Tighten to 54-71 Nm (40-52 Lb-Ft)
E	—	Tighten to 40-60 Nm (30-44 Lb-Ft)