10)
It will be necessary to adapt from your existing headers or manifold downpipes to the Flowmaster H-
pipe assembly. Due to the many different variables in header/manifold down pipe locations, we have included
2
#86084S
adapter pipes to aid in the fabrication of the connection between these two areas.
11)
Remove temporary support and allow the system to suspend on the hangers.
12)
Adjust the position of the pipes and mufflers to provide a satisfactory fit. Be sure to maintain an
adequate clearance around all parts of the system to avoid rattles or damage to heat sensitive components.
Once you’re happy with the fit, tighten the clamps down securely. For a cleaner appearance and more secure
installation, we highly recommend welding all slip-fit connections.
PACKING LIST
Qty
Description
Part#
2
Muffler
842548-Z
2
Front Adapter Pipe
86084S
1
Left H-pipe Assy.
86074S
1
Right H-pipe Assy.
86075S
2
Muffler Inlet Pipe
86076S
1
Right Over-axle Pipe
86077S
1
Left Over-axle Pipe
86078S
2
Rear Exit Pipe (R/L)
86079S
2
Side Exit Pipe (R/L)
86080S
2
Turndown Exit Pipe (R/L)
86081S
1
Right Dump Down Exit
86085S
1
Left Dump Down Exit
86086S
1
Parts kit
PK733
10
2½" Clamp
MC250BS
1
2” Clamp
MC200BS
6
Rubber Mount
HA572
12
3/8” x 1” Bolt
HW208
12
3/8” Nut
HW103
4
3/8” Flat Washer
HW303
12
3/8” Lock Washer
HW309
