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Wehrli Custom Fabrication - WCFab » Chevrolet / GMC, 6.6L Duramax
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- Make: Chevrolet / GMC
- Model: 6.6L Duramax
View Universal items for: Chevrolet / GMC 6.6L Duramax
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Description: FASS FUEL SYSTEMS PF-3001 PARTICULATE FILTER (PF-3001)
NEW PARTICULATE FILTER IS RATED @ 144 MICRONS. THE 144 MICRON PARTICULATE FILTER ON THE SUCTION SIDE WILL DRASTICALLY REDUCE CAVITATION,...More Details »
Item #: PF-3001
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $20.90
Description: FASS FUEL SYSTEMS DIESEL FUEL TITANIUM SERIES ELECTRIC HEATER KIT (HK-1001)
Item #: HK-1001
Condition:
New
Free Ground Shipping
Price: $160.55
Description: FASS TITANIUM/TITANIUM SIGNATURE SERIES DUAL ELECTRIC HEATER KIT SPLITTER
Item #: HKS-1001
Condition:
New
Price: $37.05
NEW!
Description: - NOW ACCEPTING PRE-ORDERS!
- Set of 4 High Strength Forged Aluminum Wheels
- 17 in. diameter x 8.5 in. width (1 inch taller and 2 inches wider than a factory PY0 wheel)
- +18 offset / 5.5...More Details »
Item #: WCF100585
Condition:
New
Limited Supply
EXPECTED SHIP DATE APRIL 30th, 2026 FOR PRE-ORDER CUSTOMERS. Please allow additional 10-15 business day lead time for custom powder coat finishes.
NOW ACCEPTING PRE-ORDERS!
Free Ground Shipping
Price: $3,196.00
Sale: $2,876.00
Save: 10%
Save: $320.00
Description: - Goerend Allison Aluminum Pan for 5 & 6 Speed Transmissions
- Billet aluminum filter lock
- Genuine Allison Transmission Filter
- Magnetic drain plug with copper sealing ring
- Pan Bolts &...More Details »
Item #: A-PAN-A1000-KIT
Condition:
New
Price: $319.00
Description: - Fits Extended and Crew Cab Chevy Silverado and GMC Sierra 2500/3500 Diesel
- Includes Mounting Hardware
- Requires Drilling
Item #: 75126-01A
Condition:
New
$12 Flat Rate Fedex Ground Shipping On AMP Research Steps - Continental US Only - Appears as Handling Charge during checkout
Free Ground Shipping
Price: $1,599.99
Description: - Plug and Play Installation
- Fits Double and Crew Cab Chevy Silverado and GMC Sierra 2500/3500 Gas Trucks
- Includes Mounting Hardware
- Requires Drilling
Item #: 76154-01A
Condition:
New
$12 Flat Rate Fedex Ground Shipping On AMP Research Steps - Continental US Only - Appears as Handling Charge during checkout
Free Ground Shipping
Price: $1,799.99
Description: - Headlights: 2x (One Pair) 2015-2019 GMC Sierra 2500/3500 HD / 2014-2018 GMC Sierra 1500 XB LED Headlights
- Functions: DRL (White), Turn, Parking, Low, High
- Wiring: Plug and Play Harness,...More Details »
Item #: LF544
Condition:
New
Price: $1,633.00
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
Description: - Plug and Play Installation
- Fits Double and Crew Cab Chevy Silverado and GMC Sierra 2500/3500 Diesel
- Includes Mounting Hardware
- Requires Drilling
Item #: 76254-01A
Condition:
New
$12 Flat Rate Fedex Ground Shipping On AMP Research Steps - Continental US Only - Appears as Handling Charge during checkout
Free Ground Shipping
Price: $1,799.99
Description: - Allows for removal of the stock rear bumper
- Made from strong and durable 18 gauge steel
- Black EDP coated for corrosion protection during transport and ready to prime and paint after a light...More Details »
Item #: BHP5000
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $169.00
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
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
- Compatible with LB7, LLY, LBZ, LMM, LML, and L5P Duramax Equipped Trucks
Item #: WCF100216
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $45.00
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
- Compatible with LB7, LLY, LBZ, LMM, LML, and L5P Duramax Equipped Trucks
Item #: WCF100215
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $45.00
Description: - LED Pods: 2x (One Pair) Morimoto 1Banger
- Choose From HXB Combo, Spot, Wide, or Flood in White or Yellow
- 2 in. Wide x 2 in. High x 2.5 in. Deep
- Brackets: 2x Standard Bottom Mount Brackets...More Details »
Item #: BAF098
Condition:
New
Price: $240.00
NEW!
Description: For individuals who tow, race, or simply run their diesel hard, proper cooling of your transmission fluid is one of the most important things that you can do to prolong the life of your...More Details »
Item #: 124060000
Condition:
New
Price: $329.99
Description: - EFI Live TCM Tuning for Allison 1000 5 Speed Transmissions
- Better Acceleration
- Quicker Shifts
- Prevents short shifting in performance use
- Improved Torque Converter lock up strategy
-...More Details »
Item #: DT1110010008000
Condition:
New
This Product cannot ship to the state of California
Free Ground Shipping
Price: $300.00
Description: - EMISSIONS INTACT 50 State Legal Custom Performance Tuning
- California Legal!
- Add up to +100 RWHP & +180 lb/ft TQ to your Duramax
- Includes CARB EO Sticker
- Single Tune Options Available:...More Details »
Item #: DT8110010001000
Condition:
New
50 State Compliant CARB EO D-845 #11-10, D-845 #11-11
Free Ground Shipping
Price: $300.00
NEW!
Description: The LB7 (2001-2004) DT1000 - BUILT TRANSMISSION is designed for 2001, 2002, and 2003 Chevy Silverado or GMC Sierra Duramax Trucks being pushed to extreme performance levels. Great for those that...More Details »
Item #: DT1000-LB7-5 / DT1000-LB7-6
Condition:
New
Built to order.
Ships truck freight. Liftgate service option is required for destination addresses without a forklift or ability to unload from a semi-trailer. Will Call Pickup at our facility is also available.
Price: $9,950.00
NEW!
Description: The LB7 (2001-2004) DT550 - BUILT TRANSMISSION WITH TORQUE CONVERTER is designed for 2001, 2002, 2003, and 2004 Chevy Silverado or GMC Sierra Duramax. Great for those that daily drive their truck,...More Details »
Item #: DT550-LB7-5-TQC / DT550-LB7-6-TQC
Condition:
New
In stock ships in 3-5 business days.
Ships truck freight. Liftgate service option is required for destination addresses without a forklift or ability to unload from a semi-trailer. Will Call Pickup at our facility is also available.
Price: $5,500.00
NEW!
Description: The LB7 (2001-2004) DT750 - BUILT TRANSMISSION WITHOUT TORQUE CONVERTER is designed for 2001, 2002, and 2003 Chevy Silverado or GMC Sierra Duramax Trucks. Great for those that are building the...More Details »
Item #: DT750-LB7-5 / DT750-LB7-6
Condition:
New
In stock ships in 3-5 business days.
Ships truck freight. Liftgate service option is required for destination addresses without a forklift or ability to unload from a semi-trailer. Will Call Pickup at our facility is also available.
Price: $6,145.00
NEW!
Description: Required for tune selection when running our switchable (SOTF) 6.6L LB7 Duramax performance tuning on 2001-2004 model year trucks
Includes:
- Rotary SOTF Tune Selection Switch with Knob
- Switch Position Label / Face Plate
- Wire Conduit
Item #: 1101A020
Condition:
New
In Stock, ships in 3-5 Business Days.
This Product cannot ship to the state of California
Price: $40.00
NEW!
Description: Required for tune selection when running our switchable (SOTF) 6.6L LB7 Duramax performance tuning on 2001-2004 model year trucks
Includes:
- Keylock SOTF Tune Selection Switch with 2 Keys
-...More Details »
Item #: keylockblue
Condition:
New
In Stock, ships in 3-5 Business Days.
This Product cannot ship to the state of California
Price: $65.00
Description: - Fully TIG Welded 11 GA Stainless Steel Construction
- Heavy Duty 2" Driver Side Up Pipe
- Heavy Duty 2" Passenger Side Up Pipe
- Up Pipe Gaskets (4)
- Made in USA
Item #: WCF100590
Condition:
New
In Stock. Ships in 3-5 business days.
This Product cannot ship to the state of California
Price: $639.00
Description: - Fully TIG Welded 11 GA Stainless Steel Construction
- Heavy Duty 2" Driver Side Up Pipe
- Heavy Duty 2" Passenger Side Up Pipe Passenger Side Up Pipe for Compound / Twin Turbo Applications
-...More Details »
Item #: WCF100589
Condition:
New
In Stock. Ships in 3-5 business days.
This Product cannot ship to the state of California
Price: $639.00
Description: - Flows 40% Better than Stock
- True 4" Inlet Turbo Intake with smooth flowing transition to turbo compressor cover for optimized airflow and drivability
- Precision CNC Machined Cast Aluminum...More Details »
Item #: WCF100535
Condition:
New
WCFab Red, WCFab Grey, Gloss Black, and Gloss White in stock ships in 3-5 business days. All other colors 10-15 Business Day Lead Time
This Product cannot ship to the state of California
Price: $179.00
Description: - 4" Intake Pipe
- 14g Aluminum Construction
- Air Box & Lid Constructed of 10G Aluminum Sheet
- Dry Air Filter
- Outerwear's Pre-Filter Cover
- Includes Installation Hardware
- 4" Intake...More Details »
Item #: WCF100300
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 the state of California
Price: $639.00
Description: - MAP Sensor Bung / Weld Fitting for Custom Fabricated Intercooler Piping
- CNC Machined Billet Aluminum
- Made in USA
Item #: WCF205-35
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $30.00
Description: - Fully TIG Welded, CNC machined billet steel exhaust manifolds
- Fully TIG Welded 11 GA Stainless Steel Construction Heavy Duty Up Pipes
- Manifolds finished in Black Ceramic Coat rated for...More Details »
Item #: WCF100174
Condition:
New
In Stock. Ships in 3-5 business days.
This Product Cannot Ship to the State of California
Price: $1,929.00
Description: -3" Driver Side Intercooler Pipe
-14g Mandrel Bent Aluminum Construction
-Silicone Boots
-T-Bolt Clamps
-Powder Coating
-No tuning required
Item #: WCF100349
Condition:
New
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.
This Product cannot ship to the state of California
Price: $315.00
Description: - EMISSIONS INTACT Custom Performance Tuning
- Add up to +100 RWHP & +180 lb/ft TQ to your Duramax
- Single Tune Options Available:
- Heavy Tow (8K lbs to GVWR)- +40 RWHP, +72 ft-lbs
- Light...More Details »
Item #: DT1110010001009
Condition:
New
This Product cannot ship to the state of California
Free Ground Shipping
Price: $300.00
Description: - 100% Drop in Replacement (Federal Emissions vehicles ONLY, does not fit California delivered vehicles)
- Includes a Fleece Performance LB7 High Flow Intake Horn and installation kit
- No Core Charge!
- Supports up to 625 RWHP
Item #: FPE-LB7-63
Condition:
New
Ships in 3-5 business days. 10-15 business day lead time for powder and ceramic coat options.
This Product cannot ship to the state of California
Price: $1,999.00
Description: - Cupless injector bore - no injector cups to leak again ever!
- New aluminum casting
- New valves, valve guides, new springs, and new valve seals
- CNC cut, multi-angle valve job
Item #: FPE-61-10001-D-CL, FPE-61-10001-P-CL
Condition:
New
This Product cannot ship to the state of California
Price: $1,199.00
Description: - Minimizes air restriction and flow better than stock
- Fully enclosed airbox that protects the filter from dirt and keeps out engine heat
- Available in either 8-layer Cotton Cleanable or Dry Extendable media
Item #: 75-5101, 75-5101D
Condition:
New
This Product Cannot Ship to the State of California
Price: $379.00
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 100% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-100SAC
Condition:
New
This Product Cannot Ship to the State of California
Price: $4,357.60
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 150% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-150SAC
Condition:
New
This Product Cannot Ship to the State of California
Price: $4,794.40
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 200% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-200SAC
Condition:
New
This Product Cannot Ship to the State of California
Price: $5,044.00
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 250% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-250SAC
Condition:
New
This Product Cannot Ship to the State of California
Price: $5,938.40
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 30% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-30SAC
Condition:
New
This Product Cannot Ship to the State of California
Price: $3,546.40
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 300% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-300SAC
Condition:
New
Please Call for Availability
This Product Cannot Ship to the State of California
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 350% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-350SAC
Condition:
New
Please Call for Availability
This Product Cannot Ship to the State of California
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 400% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-400SAC
Condition:
New
Please Call for Availability
This Product Cannot Ship to the State of California
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 45% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-45SAC
Condition:
New
This Product Cannot Ship to the State of California
Price: $3,546.40
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 450% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-450SAC
Condition:
New
Please Call for Availability
This Product Cannot Ship to the State of California
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 500% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-500SAC
Condition:
New
Please Call for Availability
This Product Cannot Ship to the State of California
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 65% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-65SAC
Condition:
New
This Product Cannot Ship to the State of California
Price: $3,660.80
Description: -8 LB7 New Bosch SAC Style Injectors
-Modified 80% flow over OEM
-Copper Washers
-O-rings
Item #: LB7-80SAC
Condition:
New
This Product Cannot Ship to the State of California
Price: $4,024.80
Description: -8 LB7 New SAC00 Bosch Injectors
-Copper Washers
-O-rings
-Increased fuel injector lifespan
-50 State Legal - CARB compliant (EO number D-756-2)
-Stock fuel delivery, no calibration required...More Details »
Item #: LB7-00SAC
Condition:
New
CARB compliant (EO number D-756-2)
Price: $2,712.00
Description: -8 LB7 New TorqueMaster VCO Bosch Injectors
-Copper Washers
-O-rings
Item #: LB7-10VCO
Condition:
New
This Product cannot ship to the state of California
Price: $2,265.60
Description: -NEW! Now includes 4" Intake with Fabricated Air Box & Lid Constructed of 10G Aluminum Sheet
-14G Mandrel Bent Aluminum Piping
-Premium Dry Media Air Filter
-Outerwear's Pre-Filter Cover
-T4...More Details »
Item #: WCF100478
Condition:
New
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 the state of California
Price: $3,295.00
Description: -NEW! Now includes 5" Intake with Fabricated Air Box & Lid Constructed of 10G Aluminum Sheet
-14G Mandrel Bent Aluminum Piping
-Premium Dry Media Air Filter
-Outerwear's Pre-Filter Cover
-T4...More Details »
Item #: WCF100489
Condition:
New
Gloss Black In Stock Ships in 3-5 Business Days. 10-15 business day lead time on other colors.
This Product cannot ship to the state of California
Price: $3,295.00
Description: - 5" Intake
- Dry Air Filter
- Outerwears Pre-Filter cover
- 3.5" Cold Side Charge Pipe
- 3.5" Turbo Inlet Horn
- 3" One Piece Y-bridge with HD Bead roll end
- 3" Cold Side Intercooler Pipe...More Details »
Item #: WCF100570
Condition:
New
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 the state of California
Price: $3,455.00
Description: - 3" Fabricated Y-Bridge (for OEM style intake horn)
- 3" Passenger (Cold) Side Intercooler Pipe
- 3" Driver (Hot) Side Intercooler Pipe
- 14 ga Aluminum Construction
- FPRV Block Off Kit
-...More Details »
Item #: WCF100411
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.
This Product cannot ship to the state of California
Price: $1,179.00
Description: - 3" Fabricated Y-Bridge (for OEM style intake horn)
- 3" Passenger (Cold) Side Intercooler Pipe
- 3" Driver (Hot) Side Intercooler Pipe
- 4" Intake Pipe
- Air Box with Lid
- Dry Air Filter
-...More Details »
Item #: WCF100435
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.
This Product cannot ship to the state of California
Price: $1,855.00
Description: -3" Fabricated Billet Y-Bridge
-3" Passenger (Cold) Side Intercooler Pipe
-3" Driver (Hot) Side Intercooler Pipe
- 4" Intake Pipe
- 14g Aluminum Construction
- Air Box with Lid
- Dry Air...More Details »
Item #: WCF100712
Condition:
New
WCFab Red in stock and ships in 3-5 business days. 10-15 business day lead time on other colors.
This Product cannot ship to the state of California
Price: $2,089.00
Description: - Fully TIG Welded 11 GA Stainless Steel Construction
- Heavy Duty 2" Passenger Side Up-Pipe (Clearanced for conventional down pipes)
- Includes Up Pipe Gaskets (2)
- Made in USA
Item #: WCF100654
Condition:
New
In Stock. Ships in 3-5 business days.
This Product cannot ship to the state of California
Price: $345.00
Description: - Fully TIG Welded 11 GA Stainless Steel Construction
- Heavy Duty 2" Passenger Side Up Pipe Passenger Side Up Pipe for Compound / Twin Turbo Applications
- Full flow design eliminates clearance...More Details »
Item #: WCF100648
Condition:
New
In Stock. Ships in 3-5 business days.
This Product cannot ship to the state of California
Price: $345.00
Description: - 4" Intake Pipe
- 14g Aluminum Construction
- Air Box & Lid Constructed of 10G Aluminum Sheet
- Dry Air Filter
- Outerwear's Pre-Filter Cover
- Includes Installation Hardware
- Silicone Boot...More Details »
Item #: WCF100190
Condition:
New
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.
This Product cannot ship to the state of California
Price: $545.00
Description: -Stainless Block off Plug
-5/16" Fuel Line
-5/16" Brass Tee Fitting
-Hose Clamps
Item #: WCF100023
Condition:
New
In Stock. Ships in 3-5 business days.
Price: $75.00
Item #: WCF100797
Condition:
New
In Stock. Ships in 3-5 business days. While Supplies Last!
Price: $250.00
