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UnderDog Diesel » 2018, GMC, Sierra 3500
Products for:
- Year: 2018
- Make: GMC
- Model: Sierra 3500
View Universal items for: 2018 GMC Sierra 3500
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Suspension Lift Kit
Description: Lift Kit w/Shocks 7-8 in. Front w/Bilstein Shocks w/Tube A-Arms And Keys
Item #: 44-3072
Condition:
New
Not Available
Suspension Leaf Spring Block Kit
Description: Rear Block Kit 1 in. Cast Iron Blocks Incl. Integrated Locating Pin E-Coated U-Bolts Nuts/Washers For Use w/Factory Top Overloads Fits: 2011-16 GM/CHEVY HD 2500 2WD/4WD-1.0in. TALL OEM STYLE...More Details »
Item #: 66-3121
Condition:
New
Price: $149.95
Suspension Leaf Spring Block Kit
Description: Rear Block Kit 2 in. Cast Iron Blocks Incl. Integrated Locating Pin E-Coated U-Bolts Nuts/Washers Fits: 2011-16 GM/CHEVY HD 2500 2WD/4WD-2.0in. TALL OEM STYLE REAR BLOCK KIT. . CAST CONSTRUCTION...More Details »
Item #: 66-3112
Condition:
New
Price: $169.95
Suspension Leaf Spring Block Kit
Description: Rear Block Kit 2 in. Cast Iron Blocks Incl. Integrated Locating Pin E-Coated U-Bolts Nuts/Washers For Use w/Factory Top Overloads Fits: 2011-16 GM/CHEVY HD 2500 2WD/4WD-2.0in. TALL OEM STYLE...More Details »
Item #: 66-3122
Condition:
New
Price: $169.95
Suspension Shock Absorber
Description: SST3000 Shock Absorber Fits: 2011-16 GM-SILVERADO/SIERRA 2500HD/3500HD-REAR-SST3000 (EACH) FOR 4-5in. OF REAR LIFT
Item #: 93-3156R
Condition:
New
Not Available
Suspension Shock Absorber
Description: SST3000 Shock Absorber Fits: 2011-16 GM-SILVERADO/SIERRA 2500HD/3500HD-FRONT-SST3000 (EACH) FOR 7-8in. OF FRONT LIFT
Item #: 93-3168F
Condition:
New
Not Available
Suspension Shock Absorber
Description: SST3000 Shock Absorber Fits: 2011-16 GM SILVERADO/SIERRA 2500HD/3500HD-REAR-SST3000 (EACH) FOR 1-2in. OF REAR LIFT
Item #: 93-3411R
Condition:
New
Not Available
Suspension Shock Absorber
Description: SST3000 Shock Absorber Fits: 2011-2016 GM-SILVERADO/SIERRA 2500HD/3500HD-FRONT-SST3000 (EACH) FOR 4in. OF FRONT LIFT
Item #: 93-3414F
Condition:
New
Not Available
Suspension Lift Kit
Description: SST® Lift Kit 4 in. Front/1 in. Rear Lift w/Tubular Upper Control Arms Fits: 2011-2016 GM/CHEVY 2500HD SST LIFT KIT 2WD/4WD. 4.0in. FRONT WITH A-ARMS, 1.0in. REAR. BLACK FINISH
Item #: 69-3411
Condition:
New
Not Available
Suspension Lift Kit
Description: SST® Lift Kit w/Shocks 3.5 in. Front Lift 1 in. Rear Lift w/Fabricated Control Arms SST3000 Shocks
Item #: 69-3513
Condition:
New
Not Available
Suspension Lift Kit
Description: SST® Lift Kit w/Shocks 3.5 in. Front Lift 2 in. Rear Lift w/Fabricated Control Arms SST3000 Shocks
Item #: 69-3514
Condition:
New
Not Available
Suspension Lift Kit
Description: SST® Lift Kit w/Shocks 4 in. Front/1 in. Rear Lift w/Tubular Upper Control Arms Incl. SST3000 Shocks Fits: 2011-2016 GM SILVERADO/SIERRA 2500HD-TUBE A-ARM-F/R SST3000 SHOCKS
Item #: 69-3511
Condition:
New
Not Available
Suspension Lift Kit
Description: SST® Lift Kit w/Shocks 4 in. Front/2 in. Rear Lift w/Tubular Upper Control Arms Incl. SST3000 Shocks Fits: 2011-2016 GM SILV/SIERRA 3500HD W/TP/DRW-TUBE A-ARM-F/R SST3000 SHOCKS
Item #: 69-3522
Condition:
New
Not Available
Steering Tie Rod End Kit
Description: Tie Rod Kit Fits: 2011-16 GM2500-2500 HEAVY DUTY REPLACEMENT TIE ROD KIT
Item #: 67-3413
Condition:
New
Not Available
Cold Air Intake
Item #: 75-5144
Condition:
New
Price: $349.00
Cold Air Intake
Item #: 75-5144D
Condition:
New
Price: $349.00
Fuel Tank
Description: The distance to empty (DTE) on GM trucks can’t be reprogrammed, so it will show about half the mileage that is really left. This occurs with all aftermarket high-capacity fuel tanks.
The fuel...More Details »
Item #: 10-1015-1
Condition:
New
Price: $1,349.00
Fuel Tank
Description: Important Note about the Fuel Gauge Operation:
The distance to empty (DTE) on GM trucks can’t be reprogrammed, so it will show about half the mileage that is really left. You can multiple the...More Details »
Item #: 10-1017
Condition:
New
Price: $1,249.00
Description: For modified trucks only.
Item #: L5P-CP3-10
Condition:
New
This item will dropship from S&S directly. Rough lead time is 5 Business Days.
This product cannot ship to California.
Price: $2,912.00
Description: For modified trucks only.
Item #: L5P-CP3-12
Condition:
New
This item will dropship from S&S directly. Rough lead time is 5 Business Days.
This product cannot ship to California.
Price: $3,406.00
Description: For modified trucks only.
Item #: L5P-CP3-14
Condition:
New
This item will dropship from S&S directly. Rough lead time is 5 Business Days.
This product cannot ship to California.
Price: $3,900.00
Item #: L5P-100-SAC
Condition:
New
This item will dropship from S&S directly. Rough lead time is 5 Business Days.
This product cannot ship to California.
Price: $4,305.60
Item #: L5P-150-SAC
Condition:
New
This item will dropship from S&S directly. Rough lead time is 5 Business Days.
This product cannot ship to California.
Price: $4,903.60
Item #: L5P-200-SAC
Condition:
New
This item will dropship from S&S directly. Rough lead time is 5 Business Days.
This product cannot ship to California.
Price: $5,501.60
Item #: L5P-050-SAC
Condition:
New
This item will dropship from S&S directly. Rough lead time is 5 Business Days.
This product cannot ship to California.
Price: $3,707.60
Description: Replaces the Failure Prone Factory Turbo Coolant Return Tube
-Billet Aluminum
-High Temp O-Ring for leak proof seal.
*Stock Trucks may require modifications to coolant hoses*
Intended for...More Details »
Item #: SRF-L5P-TCF
Condition:
New
Not Available
In stock. Order by 2PM EST for guaranteed same day shipping.
Price: $60.00
Description: Replaces the Failure Prone Factory Turbo Coolant Return Tube
-Billet Aluminum
-High Temp O-Ring for leak proof seal.
-Coolant Rated Hose
-Barbed Tee Fitting w/ Hose Clamps
*Stock Trucks...More Details »
Item #: SRF-L5P-TCFA-1719
Condition:
New
Limited Supply: Only 2 Left!
In stock. Order by 2PM EST for guaranteed same day shipping.
Price: $90.00
Fuel Tank
Description: Extra Large Midship Tank 56 Gallon Cross Linked Polyethylene Fuel Tank
Item #: 7010217
Condition:
New
Price: $1,300.55
Fuel Tank
Description: Extra Large Midship Tank 66 Gallon
Item #: 7010317
Condition:
New
Price: $1,443.05
Fuel Tank
Description: Spare Tire Auxiliary Fuel System
Item #: 4010211
Condition:
New
Price: $2,032.05
Spare Tire Carrier Mount
Description: Spare Tire Buddy In Bed Tire Mount
Item #: 9901330
Condition:
New
Price: $94.05
Fuel Tank
Description: Travel Trekker Auxiliary Diesel Fuel System In Bed 40 Gallon
Item #: 5410040
Condition:
New
Price: $1,329.05
Fuel Tank
Description: Travel Trekker Auxiliary Diesel Fuel System In Bed 50 Gallon
Item #: 5410050
Condition:
New
Price: $1,357.55
Coolant Block-Off Plate
Description: Billet Aluminum
Black Anodized
Viton O-Ring Integrated Seal
Includes New Grade 10.9 Hardware
Machined in the USA
Item #: UDD-DMAX-CBOP
Condition:
New
Price: $50.95
Sale: $45.86
Save: 10%
Save: $5.09
EPC Fooler
Description: -Increased Line Pressure
-Increased Clamping Force to Clutch Packs
-Increased Ability to hold more HP
-Enhances Transmission Performance
-Easy Install
Item #: UDD-EPC-FOOLER
Condition:
New
Price: $44.99
Sale: $40.49
Save: 10%
Save: $4.50
Description: Includes:
Banks iDash Pro Standalone (66710)
Banks iDash Pro Expansion (66712)
UnderDog 52MM Dual Gauge Pillar Mount (UDD-1519-52MM-MOUNT-D)
(If you choose a Data Pro, You will receive One...More Details »
Item #: UDD-BANKS-1519-iDashPRO-Dual
Condition:
New
Price: $923.00
Sale: $830.70
Save: 10%
Save: $92.30
Description: Includes:
Banks iDash Pro Standalone (66710)
UnderDog 52MM Single Gauge Pillar Mount (UDD-1519-52MM-MOUNT-S)
VERIFY FITMENT OF PILLAR MOUNT
Item #: UDD-BANKS-1519-iDashPRO-Single
Condition:
New
Price: $484.00
Sale: $435.60
Save: 10%
Save: $48.40
Description: Brand New - No Core Charge
Item #: ZSG7675
Condition:
New
Price: $560.00
Description: CNC Machined Billet Aluminum Thermostatic Bypass Plug
Black Anodized Finish
High temperature silicone O-ring seals
Reduces fluid flow restriction to trans cooler
Simple Installation...More Details »
Item #: WCF100469
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $61.00
Sale: $59.17
Save: 3%
Save: $1.83
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
In Stock. Ships in 3-5 business days.
Price: $42.00
Sale: $40.74
Save: 3%
Save: $1.26
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
In Stock. Ships in 3-5 business days.
Price: $45.00
Sale: $43.65
Save: 3%
Save: $1.35
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
In Stock. Ships in 3-5 business days.
Price: $45.00
Sale: $43.65
Save: 3%
Save: $1.35
Description: #NAME?
Item #: WCF206-19
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $51.00
Sale: $49.47
Save: 3%
Save: $1.53
Description: TIG Welded Fabricated Aluminum Cover for Plastic Reservoir
Utilizes OEM Mounting Points and Hardware
Installs in minutes with basic hand tools
Custom Powder Coat Finish
Item #: WCF100205
Condition:
New
WCFab Red, Illusion Purple, Candy Teal, Bengal Blue, Bengal Red, Gloss Black, and Gloss White in stock and ships in 3-5 business days. 10-15 business day lead time on
other colors.
Price: $150.00
Sale: $145.50
Save: 3%
Save: $4.50
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
In Stock. Ships in 3-5 business days.
Price: $53.00
Sale: $51.41
Save: 3%
Save: $1.59
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
In Stock. Ships in 3-5 business days.
Price: $53.00
Sale: $51.41
Save: 3%
Save: $1.59
Description: ***For Regular Cab Long Bed, Extended 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 #: WCF100851
Condition:
New
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.
Price: $999.00
Sale: $969.03
Save: 3%
Save: $29.97
Description: ***For Extended 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 #: WCF100853
Condition:
New
WCFab Red 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.
Price: $999.00
Sale: $969.03
Save: 3%
Save: $29.97
Wehrli Custom Fabrication 2011-2019 Duramax Traction Bar Brackets & Hardware Install Kit - WCF100841
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 #: WCF100841
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $285.00
Sale: $276.45
Save: 3%
Save: $8.55
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 #: WCF100432
Condition:
New
Fine Texture Black, Flat Black, and Gloss Black in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Price: $299.00
Sale: $290.03
Save: 3%
Save: $8.97
Description: Fabricated tubular steel support connects rear housing of Allison transmission to transfer case reinforcing the weaker tail housing section to eliminate flex caused by driveline vibrations which...More Details »
Item #: WCF100140
Condition:
New
WCFab Red and Gloss Black in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
Price: $185.00
Sale: $179.45
Save: 3%
Save: $5.55
Description: - Mounts between WCFAB Lower Valance Filler Panel and the bumper using the same OEM Hardware as the Filler Panel
- 16G Stainless Steel Construction
- License Plate Mounting Hardware included
- Made in USA
Item #: WCF100156
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $47.00
Sale: $45.59
Save: 3%
Save: $1.41
Wehrli Custom Fabrication 2015-2019 GM 2500/3500HD Truck 3/4 in. Front Bumper Spacer Kit - WCF100462
Description: WCFab 3/4" Front Bumper Spacer Kit for 2015-2019 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 #: WCF100462
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $235.00
Sale: $227.95
Save: 3%
Save: $7.05
Wehrli Custom Fabrication 2015-2019 GM 2500/3500HD Truck 3/8 in. Front Bumper Spacer Kit - WCF100453
Description: WCFab 3/8" Front Bumper Spacer Kit for 2015-2019 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 #: WCF100453
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $190.00
Sale: $184.30
Save: 3%
Save: $5.70
Description: This stainless steel grille mounts in the opening in the bumper on the 2015-2019 HD GMC Sierra trucks providing protection to the trans cooler assembly from flying road debris while offering a...More Details »
Item #: WCF100291
Condition:
New
Raw Stainless and Fine Texture Black in stock ships in 3-5 business days. All other colors 10-15 Business Day Lead Time
Price: $140.00
Sale: $135.80
Save: 3%
Save: $4.20
Description: Fits 2017-2019 Short Bed & Long Bed and 2020-2024 Long Bed (except 2023 & 2024 duallys)
Increase fuel filter capacity and amount of time between filter changes
Anodized billet aluminum fuel...More Details »
Item #: WCF100361
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $255.00
Sale: $247.35
Save: 3%
Save: $7.65
Description: Coolant Tank
Low Coolant Level Sensor
Billet Anodized Cap
Over Flow Hose
Coolant Level Sight Glass
Installation hardware
Powder Coating
Item #: WCF100433
Condition:
New
WCFab Red, WCFab Grey, Illusion Purple, Candy Teal, Bengal Red, Bengal Blue, Flat Black, Gloss Black, and Gloss White in stock and ships in 3-5 business days. 10-15
business day lead time on other colors.
Price: $509.00
Sale: $493.73
Save: 3%
Save: $15.27
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
NO Tuning...More Details »
Item #: WCF100530
Condition:
New
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.
This product cannot ship to California.
Price: $320.00
Sale: $310.40
Save: 3%
Save: $9.60
Description: Aluminum intake pipe
Intake horn
Air Box & Lid Constructed of 10G Aluminum Sheet
Includes dry filter
NO Tuning required, bolt-on
Will fit on stock truck no other modifications or...More Details »
Item #: WCF100360
Condition:
New
WCFab Red, WCFab Grey, Bengal Red, Gloss White, and Gloss Black in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
This product cannot ship to California.
Price: $839.00
Sale: $813.83
Save: 3%
Save: $25.17
Description: 3 in. Hot Side Intercooler Pipe
3.5 in. Cold Side Intercooler Pipe
CNC Machined Flange with Double O-Rings provides an improved sealing surface to eliminate boost leaks.
OEM Clip Ring...More Details »
Item #: WCF100718
Condition:
New
WCFab Red, WCFab Grey, Candy Teal, Illusion Purple, Bengal Red, Gloss White and Gloss Black in stock and ships in 3-5 business days. 10-15 business day lead time on
other colors.
This product cannot ship to California.
Price: $635.00
Sale: $615.95
Save: 3%
Save: $19.05