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Parts
Exhaust Parts
Catalytic Converters
GMC
Sierra 3500
2003 GMC Sierra 3500
Catalytic Converters & Components
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6.0L
6.6L
8.1L
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Performance
High-performance upgrades for maximum power
Replacement
OEM-quality replacement components
MagnaFlow® - Diesel Direct Fit Catalytic Converter
36
# 6551690276
$840.00
MagnaFlow® - Diesel Universal Fit Round Body Catalytic Converter
42
# 1198253298
$551.00
MagnaFlow® - Heavy Metal Direct Fit Catalytic Converter
36
# mpn1136952
$744.00
MagnaFlow® - Heavy Metal Non-Heatshield Covered Universal Fit Round Body Catalytic Converter
42
# mpn2567701666
$248.00
MagnaFlow® - OBDII Universal Fit Oval Body Catalytic Converter
42
# 1198253175
$425.00 - $603.00
MagnaFlow® - OEM Grade Direct Fit Catalytic Converter
16
# 2671485516
$782.00
MagnaFlow® - OEM Grade Universal Fit Round Body Catalytic Converter
42
# 6043670175
$258.00
Davico® - Direct Fit Catalytic Converter
12
# 1198253141
$611.63
+ Free Shipping
with iD FastTrack
Davico® - Direct Fit Catalytic Converter and Pipe Assembly
14
# 6473721403
$419.52 - $716.12
CATCO® - Direct Fit Catalytic Converter and Pipe Assembly
6
# 6401374573
$813.43 - $860.87
Eastern Catalytic® - ECO II Direct Fit Catalytic Converter and Pipe Assembly
28
# 6551812274
$632.05
Eastern Catalytic® - Standard Universal Fit Large Oval Body Catalytic Converter
28
# 1198253161
$247.36
Walker® - CalCat™ Universal Fit Catalytic Converter
82
# 1198253196
$319.94
+ Free Shipping
with iD FastTrack
CATCO® - 776 Series Universal Fit Large Oval Body Catalytic Converter
6
# 6693785439
$1,032.05
CATCO® - 91 Series Universal Fit Catalytic Converter
6
# 6693691372
$425.68 - $782.44
AB Catalytic® - Direct Fit Catalytic Converter and Pipe Assembly
0
# mpn5281648614
$449.18
AP Exhaust® - 774 Series Universal Fit Catalytic Converter
40
# 6334427475
$555.68
+ Save an extra
$24.00
with iD FastTrack
AP Exhaust® - Direct Fit Catalytic Converter and Pipe Assembly
21
# 1198253231
$647.20 - $684.96
AP Exhaust® - Universal Fit Catalytic Converter
40
# 1198253203
$301.13 - $374.56
+ Free Shipping
with iD FastTrack
JBA® - Catalytic Converter Gasket
0
# 1198253295
$10.61
Mahle® - Catalytic Converter Gasket
0
# mpn4751357971
$11.19
Victor Reinz® - Catalytic Converter Gasket
0
# mpn4738015196
$12.58
AP Exhaust® - 774 Series Universal Fit Catalytic Converter$555.68 + Save an extra $24.00 with iD FastTrack
