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OCD Performance » 2021, GMC, Sierra 3500 HD
Products for:
- Year: 2021
- Make: GMC
- Model: Sierra 3500 HD
View Universal items for: 2021 GMC Sierra 3500 HD
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Suspension Lift Kit
Description: 20-UP GM 2500HD/3500 0-2" STAGE 1 SUSPENSION SYSTEM
0-2” Adjustable lift height over stock Vehicle specific tuned 2.5" front and 2.0” rear shocks for superior shock damping and control...More Details »
Item #: K78351
Condition:
New
Limited Supply: Only 0 Left!
Price: $2,303.37
Suspension Lift Kit
Description: 20-UP GM 2500HD/3500 0-2" STAGE 1 SUSPENSION SYSTEM (TUBULAR)
0-2” Adjustable lift height over stock Vehicle specific tuned 2.5" front and 2.0” rear shocks for superior shock damping and...More Details »
Item #: K78351T
Condition:
New
Limited Supply: Only 0 Left!
Price: $1,708.37
Suspension Lift Kit
Description: 20-UP GM 2500HD/3500 0-2" STAGE 2 SUSPENSION SYSTEM
0-2” Adjustable lift height over stock Vehicle specific tuned 2.5 Aluminum Series remote reservoir front and rear shocks for superior shock...More Details »
Item #: K78352
Condition:
New
Please Call for Availability
Suspension Lift Kit
Description: 20-UP GM 2500HD/3500 0-2" STAGE 2 SUSPENSION SYSTEM (TUBULAR)
0-2” Adjustable lift height over stock Vehicle specific tuned 2.5 Aluminum Series remote reservoir front and rear shocks for...More Details »
Item #: K78352T
Condition:
New
Limited Supply: Only 0 Left!
Price: $3,079.90
Suspension Lift Kit
Description: 20-UP GM 2500HD/3500 0-2" STAGE 3 SUSPENSION SYSTEM
0-2” Adjustable lift height over stock Vehicle specific tuned 2.5 Aluminum Series remote reservoir front and rear shocks with adjustable...More Details »
Item #: K78353
Condition:
New
Limited Supply: Only 0 Left!
Price: $4,649.90
Suspension Lift Kit
Description: 20-UP GM 2500HD/3500 0-2" STAGE 3 SUSPENSION SYSTEM (TUBULAR)
0-2” Adjustable lift height over stock Vehicle specific tuned 2.5 Aluminum Series remote reservoir front and rear shocks with...More Details »
Item #: K78353T
Condition:
New
Please Call for Availability
Suspension Control Arm Kit
Description: 20-UP GM HD 0-2" RR SHOCK SYS W/ TUBE UCA
Features ICON's Patented Delta Joint (U.S. Patent No. 10,731,700) ICON's internal "Bump Zone" increases damping by 20% to provide more control as the...More Details »
Item #: 78734T
Condition:
New
Limited Supply: Only 0 Left!
Price: $2,159.95
Suspension Control Arm Kit
Description: 20-UP GM HD 0-2" IR SHOCK SYS W/ BILLET UCA
Features ICON's Patented Delta Joint (U.S. Patent No. 10,731,700) 100% Rebuildable 100% Revalveable CNC machined 6061 billet aluminum construction...More Details »
Item #: 78732
Condition:
New
Limited Supply: Only 0 Left!
Price: $2,399.95
Suspension Control Arm Kit
Description: 20-UP GM HD 0-2" RR SHOCK SYS W/ BILLET UCA
Features ICON's Patented Delta Joint (U.S. Patent No. 10,731,700) PTFE Lined 7/8” FK Rod Ends for improved response One-piece digressive piston...More Details »
Item #: 78734
Condition:
New
Limited Supply: Only 0 Left!
Price: $2,999.95
Suspension Control Arm Kit
Description: 20-UP GM HD 0-2" IR SHOCK SYS W/ TUBE UCA
Features ICON's Patented Delta Joint (U.S. Patent No. 10,731,700) Premium grade 5WT shock oil for consistent suspension damping along a wide temperature...More Details »
Item #: 78732T
Condition:
New
Limited Supply: Only 0 Left!
Price: $1,699.95
Suspension Control Arm Kit
Description: 20-UP GM HD 0-2" CDCV SHOCK SYS W/ BILLET UCA
Features ICON's Patented Delta Joint (U.S. Patent No. 10,731,700) One-piece digressive piston design with vehicle specific valving for unsurpassed...More Details »
Item #: 78735
Condition:
New
Limited Supply: Only 0 Left!
Price: $3,249.95
Suspension Control Arm Kit
Description: 20-UP GM HD 0-2" CDCV SHOCK SYS W/ TUBE UCA
Features ICON's Patented Delta Joint (U.S. Patent No. 10,731,700) CNC Bent Tubing CNC Machined Bushing Housings and Sleeves Built-In Caster...More Details »
Item #: 78735T
Condition:
New
Limited Supply: Only 0 Left!
Price: $2,399.95
Bumper Splash Shield
Description: 20-UP GM HD FRONT SPLASH GUARD KIT
Increases sway bar clearance when suspension is at full droop Stronger and more rigid than OE plastic splash guard CNC laser cut, brake-formed 1/8" aluminum...More Details »
Item #: 77202
Condition:
New
Limited Supply: Only 0 Left!
Price: $104.95
Suspension Ball Joint
Description: 01-UP GM HD/15-UP COLORADO/14-18 GM1500(LARGE TAPER) DELTA JOINT KIT
Patented Delta Joint (U.S. Pat. 10,731,700) combines the durability of a ball joint with the performance characteristics of a...More Details »
Item #: 614555
Condition:
New
Limited Supply: Only 0 Left!
Price: $249.95
Automatic Transmission Oil Cooler
Description: Full-Flow Thermal Bypass Valve Kit, fits Chevrolet/GMC 6.6L Duramax L5P 2017+ Mishimoto MMTC-L5P-TBVFF Full-Flow Transmission Thermal Bypass Valve Kit, fits Chevrolet/GMC 6.6L Duramax L5P 2017+
Item #: MMTC-L5P-TBVFF
Condition:
New
Limited Supply: Only 0 Left!
Price: $103.95
Automatic Transmission Oil Cooler
Description: Transmission Thermal Bypass Valve Kit, fits Chevrolet/GMC 6.6L Duramax L5P 2017+ Mishimoto MMTC-L5P-TBV Transmission Thermal Bypass Valve Kit, fits Chevrolet/GMC 6.6L Duramax L5P 2017+
Item #: MMTC-L5P-TBV
Condition:
New
Limited Supply: Only 0 Left!
Price: $128.95
Suspension Lift Kit
Description: Big Lift Kit w/Shocks
Item #: 44-19601
Condition:
New
Please Call for Availability
Available to Order
Suspension Lift Kit
Description: Big Lift Kit w/Shocks
Item #: 44-30601
Condition:
New
Please Call for Availability
Available to Order
Leaf Helper Spring
Description: Block And Add-A-Leaf Kit
Item #: 26-3204
Condition:
New
Please Call for Availability
Available to Order
Suspension Control Arm
Description: Control Arm
Item #: 44-3035
Condition:
New
Please Call for Availability
Available to Order
Suspension Leaf Spring Block Kit
Description: Made From Cast Iron/Not Light Weight Extrusions Built In Locator Pin/Not Pressed In Puts Rack Back In Your Truck For Towing/Hauling Installation Time Is About An Hour Lifetime Warranty
Item #: 66-3111
Condition:
New
Please Call for Availability
Available to Order
Suspension Leaf Spring Block Kit
Description: Made From Cast Iron/Not Light Weight Extrusions Built In Locator Pin/Not Pressed In Puts Rack Back In Your Truck For Towing/Hauling Installation Time Is About An Hour Lifetime Warranty
Item #: 66-3122
Condition:
New
Please Call for Availability
Available to Order
Suspension Lift Kit
Description: Guaranteed To Keep Your Factory Ride Guaranteed Never To Wear Break Or Fail Guaranteed Toughest Finish Guaranteed Safest Way To Level Lift Installs In One-Third Of Conventional Lift Require No...More Details »
Item #: 69-3030
Condition:
New
Please Call for Availability
Available to Order
Suspension Lift Kit
Description: SST® Lift Kit w/Shocks
Item #: 69-3035
Condition:
New
Please Call for Availability
Available to Order
Fuel Tank
Description: Country of Origin: USA Engine Manufacturer: Duramax Fuel Type: Diesel Vehicle Type: Truck/SUV
Item #: 10-1017
Condition:
New
Please Call for Availability
Cold Air Intake
Description: Country of Origin: USA Engine Manufacturer: Duramax Fuel Type: Diesel Vehicle Type: Truck/SUV
Item #: 75-5136D
Condition:
New
Please Call for Availability
Cold Air Intake
Description: Country of Origin: USA Engine Manufacturer: Fuel Type: Gas Vehicle Type: Truck/SUV
Item #: 75-5158D
Condition:
New
Please Call for Availability
Description: Replaces failure prone plastic factory GM Heater Core Firewall Coolant Fitting
Billet direct-fit replacement with 5/8" barb connection
More resistant to heat and vibration
Double O-ring...More Details »
Item #: WCF100155
Condition:
New
Please Call for Availability
In Stock. Ships in 3-5 business days.
Description: CNC Machined Billet Cap is a direct OEM Replacement not a cover
Includes new diaphragm seal
Made in USA
Black Anodized Finish
Installs in seconds
Item #: WCF100216
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $40.74
Description: CNC Machined Billet Cap is a direct OEM Replacement not a cover
Includes new diaphragm seal
Made in USA
Clear Anodized Finish
Installs in seconds
Item #: WCF100215
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $40.74
Description: Coolant Sensor
Item #: WCF206-19
Condition:
New
Please Call for Availability
This product is currently back ordered. Shipping may be delayed.
Description: CNC Machined Billet Aluminum GM factory oil cap filler neck replacement
Matches WCFab Billet Aluminum Coolant Tank and Brake Reservoir Caps
Includes o-ring seal
Machined cam lock
Black...More Details »
Item #: WCF100443
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $49.47
Description: CNC Machined Billet Aluminum GM factory oil cap filler neck replacement
Matches WCFab Billet Aluminum Coolant Tank and Brake Reservoir Caps
Includes o-ring seal
Machined cam lock
Clear...More Details »
Item #: WCF100442
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $49.47
Description: Fits 2017-2019 Short Bed & Long Bed and 2020-2023 Long Bed (except 2023 duallys)
Increase fuel filter capacity and amount of time between filter changes
Anodized billet aluminum fuel filter...More Details »
Item #: WCF100361
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $229.89
Description: Your Choice of Custom Exergy Sportsman, 10mm, 12mm, or 14mm CP3 pump specific to this kit
Billet Aluminum, Black Anodized CP3 Pump Mount Plate
High Pressure Fuel Line
High Pressure Rail...More Details »
Item #: WCF100455, WCF100456, WCF100457, WCF100458
Condition:
New
Please Call for Availability
In stock. Ships in 3-5 business days.
Description: Mount Bracket
Zinc primer & Semi gloss black powder coat finish
Item #: WCF100276
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $57.23
Description: Passenger Side Up Pipe
Driver Side Up Pipe
Up Pipe Gaskets (4)
Item #: WCF100624
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $635.35
Description: CNC Machined Billet Aluminum Plug
Black anodized finish with engraved logo
NO Tuning required, bolt on!
Will fit on stock truck no other modifications or upgrades necessary!
Item #: WCF100473
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $27.16
Description: Fully TIG Welded, CNC machined billet steel exhaust manifolds
Finished in Black Ceramic Coat rated for 1800ºF
Includes new gaskets for manifold to cylinder head, EGR flange, and manifold to...More Details »
Item #: WCF100226
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $1,997.23
Description: Fully TIG Welded, CNC machined billet steel exhaust manifolds
Finished in Black Ceramic Coat rated for 1800ºF
Includes new gaskets for manifold to cylinder head, EGR flange, and manifold to...More Details »
Item #: WCF100373
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $1,450.15
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $140.65
Description: 3.5" Down Pipe
High Temp Black Ceramic Coat Finish
Heat Wrap Pre-installed
Catalyst Back - Emissions Compliant
NO TUNING REQUIRED!
Made in USA
Item #: WCF100129
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $309.43
Description: Coolant Tank
Low Coolant Level Sensor
Black Anodized Billet Aluminum Cap
Over Flow Hose
Coolant Level Sight Glass
Installation hardware
Powder Coating More Details »
Item #: WCF100268
Condition:
New
Please Call for Availability
WCFab Red with Standard Brushed Tag, WCFab Grey with Standard Brushed Tag, Gloss White with Standard Brushed Tag, and Gloss Black with Standard Brushed Tag in stock and
ships in 3-5 business days. 10-15
business day lead time on other colors.
Description: Made from thick, cast aluminum
Includes fasteners, pan, NPT plug, and billet stainless steel Neodymium magnet drain plug
Finished in your choice of custom powder colors
Provides 2...More Details »
Item #: WCF100134
Condition:
New
Please Call for Availability
10-15 Business Day Lead Time
Description: ***For Regular Cab Long Bed, Double Cab Short Bed and Crew Cab Short Bed Models***
LIFETIME WARRANTY against bending or breaking (to original purchaser)
60" Heavy Duty Bars
Poly Bushings...More Details »
Item #: WCF100826
Condition:
New
Please Call for Availability
WCFab Red with Standard Brushed Tag and Gloss Black with Standard Brushed Tag in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Description: ***For Double Cab Long Bed and Crew Cab Long Bed Models***
LIFETIME WARRANTY against bending or breaking (to original purchaser)
68" Heavy Duty Bars
Poly Bushings
RockJock Johnny Joints...More Details »
Item #: WCF100876
Condition:
New
Please Call for Availability
WCFab Red with Standard Brushed Tag, Gloss Black with Standard Brushed Tag, and Gloss White with Standard Brushed Tag in stock and ships in 3-5 business days. 10-15
business day lead time on other colors.
Description: Includes Axle side bolt on and Frame side weld on mounts
Grade 8 Hardware
This part number is mounting hardware only - Bars not included
Powder Coating with zinc primer base coat on axle...More Details »
Item #: WCF100831
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $252.20
Description: Replaces OEM plastic front cover for lower engine bay and cooling stack which is prone to cracking and breaking.
Constructed from heavy gauge aluminum
Uses OEM mounting points
Provides...More Details »
Item #: WCF100459
Condition:
New
Please Call for Availability
Fine Texture Black in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Description: Aluminum Fabricated Cover
Stainless Hardware
Fill Plug
Custom Powder Coat Finish
Item #: WCF100114
Condition:
New
Please Call for Availability
WCFab Red and Gloss Black in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Description: WCFab 3/4" Front Bumper Spacer Kit for 2020-2024 GM 2500/3500 HD Trucks improves aftermarket wheel and tire fitment options by moving front bumper forward and away from front wheels creating more...More Details »
Item #: WCF100444
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $183.33
Description: WCFab 3/8" Front Bumper Spacer Kit for 2020-2024 GM 2500/3500 HD Trucks improves aftermarket wheel and tire fitment options by moving front bumper forward and away from front wheels creating more...More Details »
Item #: WCF100446
Condition:
New
Limited Supply: Only 0 Left!
In Stock. Ships in 3-5 business days.
Price: $131.92
Description: Qty. 4 CNC Machined Billet Aluminum Marker Light Delete Plates
High quality mounting hardware
Marker Light Harness Dummy Plugs
Available with or without machined WCFab logo in Raw Aluminum...More Details »
Item #: WCF100390, WCF100391, WCF100392, WCF100393
Condition:
New
Please Call for Availability
In Stock. Ships in 3-5 business days.
Description: 3" Hot Side Intercooler Pipe
Silicone Boots
T-Bolt Clamps
14g Mandrel Bent Aluminum Construction
Powder Coating
NO Tuning required, bolt on!
Will fit on stock truck no other...More Details »
Item #: WCF100365
Condition:
New
Please Call for Availability
WCFab Red, WCFab Grey, Gloss White, and Gloss Black in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Description: 3.5 in. Cold Side Intercooler Pipe
Incorporated threaded bung to reinstall OEM Intake Temperature Sensor
Durable Powder Coat Finish
Silicone Boot
T-Bolt Clamps
O-Rings
14g Mandrel...More Details »
Item #: WCF100381
Condition:
New
Please Call for Availability
WCFab Red, WCFab Grey, and Gloss Black in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Description: 3 1/2" Intake Horn
O-Ring
Mounting studs and nuts
Powder coating
NO Tuning required, bolt on!
Will fit on stock truck no other modifications or upgrades necessary!
Item #: WCF100833
Condition:
New
Please Call for Availability
WCFab Red, WCFab Grey and Gloss Black in stock and ships in 3-5 business days. 10-15 business day
lead time on other colors.
Description: 4" Intake Pipe
Air Box with Lid
Dry Air Filter
Outerwear's Pre-Filter Cover
Hardware
Seal for Connection to Functional Ram Air Port on Hood
High Quality Silicone Boot
Stainless...More Details »
Item #: WCF100702
Condition:
New
Please Call for Availability
WCFab Red with Standard Brushed Tag, WCFab Grey with Standard Brushed Tag, and Gloss Black with Standard Brushed Tag in stock and ships in 3-5 business days. 10-15
business day lead time on other colors.
Description: 4" Intake Pipe
3 1/2" Intake Horn
Air Box with Lid
Dry Air Filter
Outerwear's Pre-Filter Cover
Hardware
Seal for Connection to Functional Ram Air Port on Hood
High Quality Silicone...More Details »
Item #: WCF100684
Condition:
New
Please Call for Availability
WCFab Red with Standard Brushed Tag, WCFab Grey with Standard Brushed Tag, and Gloss Black with Standard Brushed Tag in stock and ships in 3-5 business days. 10-15
business day lead time on other colors.
Description: 4" Intake Pipe
Silicone Hump and Straight Boots
T-bolt Clamps
Powder coating
NO Tuning required, bolt on!
Will fit on stock truck no other modifications or upgrades necessary! More Details »
Item #: WCF100720
Condition:
New
Please Call for Availability
WCFab Red with Standard Brushed Tag, WCFab Grey with Standard Brushed Tag, and Gloss Black with Standard Brushed Tag in stock and ships in 3-5 business days. 10-15
business day lead time on other colors.
Description: 3 in. Hot Side Intercooler Pipe
3.5 in. Cold Side Intercooler Pipe
CNC Machined Flange and black anodized billet aluminum adapter with Double O-Rings provides an improved sealing surface to...More Details »
Item #: WCF100410
Condition:
New
Please Call for Availability
WCFab Red, WCFab Grey and Gloss Black in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Description: 4 in. Aluminum Intake Pipe
3.5 in. Intake Horn with PCV Port and Surge Ring
Air box enclosure with dry filter assembly and Outerwears pre-filter cover
Installation hardware, 4 in. silicone...More Details »
Item #: WCF100414
Condition:
New
Please Call for Availability
WCFab Red, WCFab Grey, Gloss White, and Gloss Black in stock and ships in 3-5 business days.
10-15 business day lead time on other colors.