2006–2007.4 Chevy and GMC 6.6L LBZ EGR Delete Kit
This FLASHARK kit provides the mechanical parts listed below for removing the factory EGR valve and cooler from supported 2006–2007.4 Chevrolet and GMC applications equipped with the 6.6L Duramax LBZ diesel engine. The upgraded Black version includes a high-flow intake tube, coolant tube, exhaust block-off plate, clamps, and listed mounting hardware. Confirm the LBZ engine code, factory EGR layout, emissions configuration, selected variant, and any tuning requirements before ordering.
Listed Fitment
| Year | Make and Model | Engine |
|---|---|---|
| 2006–2007.4 | Chevrolet Silverado 2500 HD | 6.6L V8 turbo diesel, LBZ |
| 2007.4 | Chevrolet Silverado 2500 HD Classic | 6.6L V8 turbo diesel, LBZ |
| 2006 | Chevrolet Silverado 3500 | 6.6L V8 turbo diesel, LBZ |
| 2007.4 | Chevrolet Silverado 3500 Classic / 3500 HD | 6.6L V8 turbo diesel, LBZ |
| 2006 | GMC Sierra 3500 | 6.6L V8 turbo diesel, LBZ |
Fitment check: Listed fitments only. Confirm the LBZ engine code and factory EGR/coolant layout before ordering. The current product information states that this kit does not fit 2007.5 and newer model years. Drive type, transmission, cab/bed configuration, market emissions package, and compatibility with existing modifications have not been verified.
Specifications
| Brand | FLASHARK |
|---|---|
| Product Type | EGR valve and cooler removal/block-off kit |
| Upgraded Black SKU | FLOS20044-BK |
| Black Ordinary SKU | FLOS20043-BK |
| Listed Weight | 2110 g — verify whether this applies to both variants |
| Placement | Front of vehicle |
| Instructions | Not listed as included |
| Tuner/Programming | Not listed as included; requirements must be confirmed separately |
Key Features
- LBZ-specific application: Intended only for the listed 6.6L Duramax LBZ diesel applications.
- EGR exhaust-path block-off: The listed exhaust block-off plate closes the applicable exhaust-gas path after removal of the factory EGR components.
- High-flow intake tube: Included with the upgraded Black variant and used in place of the applicable factory EGR/intake connection.
- Coolant tube and clamps: Provide the mechanical coolant-path connection listed for this kit.
- Variant-specific contents: The upgraded Black and Black Ordinary variants use different SKUs and may not include identical parts.
- Professional installation recommended: The product page does not currently provide installation instructions.
How This LBZ EGR Delete Kit Changes the Factory System
The factory EGR system routes a controlled portion of exhaust gas back into the intake. This kit is intended to remove the applicable EGR valve and EGR cooler hardware, block the listed exhaust-side connection, replace the applicable intake connection, and reconnect the coolant path using the supplied mechanical components.
“Delete” describes removal of the EGR valve and cooler hardware. “Block-off” describes closing the exhaust-gas connection with the supplied plate. This kit is not described as a DPF delete, CCV reroute, exhaust replacement, or stand-alone electronic solution.
What Is Included — Upgraded Black Variant
- 1 × high-flow intake tube
- 1 × exhaust block-off plate
- 1 × black coolant tube
- 2 × hose clamps
- 1 × M8 × 20 mm flange hex bolt
- 2 × M8 × 25 mm cap-head bolts
- 3 × M10 × 20 mm hex-head bolts
- 2 × M8 × 20 mm hex-head bolts
- 1 × M8 flanged nut
The live product page also offers a Black Ordinary variant under SKU FLOS20043-BK. Its photos and contents differ from the upgraded version. Select the correct variant and verify its package contents before purchase.
For the separately listed ordinary version, see the ordinary 2006–2007 6.6L Duramax LBZ EGR delete kit.
Additional Parts and Information to Confirm
- No ECU tuner, programming software, or electronic module is listed as included.
- Gaskets, seals, sensor fittings, plugs, and replacement fluids are not identified in the current package list.
- Installation instructions are not listed as included.
- Confirm whether factory fasteners, gaskets, sensors, or hoses must be reused.
- Existing intake, turbo, coolant-system, or other engine modifications may affect installation.
Tune, CEL, and Factory-System Considerations
Removing or blocking an electronically monitored EGR system can change the operating conditions expected by the factory engine calibration. The current product page does not provide verified vehicle-specific tuning requirements and does not include a tuner or programming module.
Before installation, confirm the correct calibration requirements with a qualified diesel technician. Depending on the vehicle configuration and calibration, an incomplete mechanical or electronic setup may produce diagnostic trouble codes, a check engine light, drivability issues, or reduced-power operation. This product does not include a guarantee of no CEL or fault codes.
Installation Notes
- Professional installation by a technician familiar with LBZ Duramax EGR and coolant systems is recommended.
- Allow the engine to cool fully before working around exhaust and coolant components.
- Coolant service may be necessary when removing the EGR cooler and changing the coolant path.
- Inspect every sealing surface, hose connection, clamp, and fastener before operation.
- Check for coolant or exhaust leaks after installation and again after the first heat cycles.
- Use the vehicle service information and verified torque specifications; torque values are not supplied on the current page.
Who This Kit Is For
- Owners of a specifically listed Chevrolet or GMC application with a confirmed 6.6L LBZ diesel engine.
- Buyers who understand that the kit mechanically removes and blocks portions of the factory EGR system.
- Vehicles whose intended use and modification plan comply with all applicable laws and regulations.
- Buyers who have confirmed any required calibration, installation supplies, and supporting parts.
Who Should Not Buy This Kit
- Vehicles that must retain their certified factory emissions-control system.
- 2007.5 and newer Duramax applications or vehicles with LB7, LMM, or another unlisted engine code.
- Buyers seeking a DPF delete pipe, CCV reroute kit, tuner, programming module, or complete exhaust system.
- Anyone expecting guaranteed road legality, emissions-test approval, no CEL, or a guaranteed performance or fuel-economy increase.
- Vehicles whose engine code, factory EGR layout, emissions configuration, or existing modifications have not been confirmed.
Emissions and Road-Use Notice
This product alters an original emissions-control system. Installation or use may be prohibited by federal, state, or local law and may affect emissions testing, registration, manufacturer warranty, or insurance. The product is not represented here as street legal, emissions compliant, inspection ready, or suitable for every off-road application. Confirm applicable requirements before purchase or installation.
Delivery, Return, and Protection
USA delivery: Free shipping is listed for standard U.S. destinations. Orders are generally processed within 1–2 business days, and the site states that customers normally receive items in approximately 5–10 business days. Remote destinations may require additional charges.
Returns: FLASHARK lists a 30-day return window. Returned products must be unopened, unused, and in their original condition and packaging. Contact customer service for authorization before sending a return.
Delivery protection: Optional Worry-Free Delivery Protection may be added in the cart for eligible loss, theft, transit damage, or delay claims, subject to the protection provider’s terms and required evidence.
Review the current Shipping Policy, Refund Policy, and Worry-Free Delivery Protection before ordering.
2006–2007.4 LBZ Duramax EGR Delete Kit FAQs
Q1: What factory system does this kit change?
A1: It is intended to remove the applicable factory EGR valve and cooler, block the listed exhaust connection, replace the applicable intake connection, and reconnect the coolant path.
Q2: Is this a DPF delete kit?
A2: No. This page is for an LBZ EGR delete kit. It does not list a DPF delete pipe or complete exhaust system.
Q3: Which engine code does it fit?
A3: The listed engine code is LBZ, 6.6L V8 turbo diesel. Confirm the engine code and factory EGR layout before ordering.
Q4: Does it fit 2007.5 and newer Duramax trucks?
A4: No. The current product information specifically excludes 2007.5 and newer model years.
Q5: Does the upgraded kit include a block-off plate?
A5: Yes. The upgraded Black package list includes one exhaust block-off plate. Confirm the selected variant because the ordinary version has different contents.
Q6: Does it include an intake tube and coolant tube?
A6: The upgraded Black variant lists one high-flow intake tube and one black coolant tube.
Q7: Is a tuner or ECU programming included?
A7: No tuner, programming software, or electronic module is listed in the package contents.
Q8: Is an ECU tune required?
A8: The current product documentation does not provide a verified vehicle-specific answer. Confirm calibration requirements with a qualified LBZ diesel technician before installation.
Q9: Can the modification cause a check engine light or fault codes?
A9: It may, depending on the vehicle configuration, retained sensors, calibration, and installation. No no-CEL guarantee is provided.
Q10: Are all gaskets and installation supplies included?
A10: Gaskets, seals, sensor accessories, replacement fluids, and installation instructions are not identified in the current package list. Confirm what must be reused or purchased separately.
Q11: Does installation require coolant service?
A11: Coolant service may be required because the kit changes components associated with the EGR cooler and coolant path. Follow verified vehicle service procedures.
Q12: Is professional installation recommended?
A12: Yes. Installation involves exhaust, intake, and coolant connections, and no installation instructions are currently listed as included.
Q13: Will it work with existing engine modifications?
A13: Compatibility has not been verified for every aftermarket intake, turbo, coolant, or tuning configuration. Existing modifications may affect installation.
Q14: Is the modification reversible?
A14: Reversibility has not been verified. It depends on retaining all original parts and whether any factory components, wiring, hoses, or calibration have been permanently altered.
Q15: Can this product guarantee emissions-test approval or road legality?
A15: No. It alters an original emissions-control system and is not represented as street legal, emissions compliant, inspection ready, or guaranteed to pass testing.
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