Product Description
The FLEECE FPE-RES-04.5-10 2004.5-2010 DURAMAX BILLET TURBO RESONATOR DELETE PLUG (LLY/LBZ/LMM) is a simple, high-value upgrade that replaces the weak factory plastic turbo resonator with a CNC-machined billet 6061 aluminum plug. Designed for 2004.5–2010 GM 6.6L Duramax LLY, LBZ, and LMM trucks, this Fleece plug cleans up the engine bay, helps optimize airflow into the turbo, and delivers a clean, finished look under the hood.
Features
- Direct-fit resonator delete plug for 2004.5–2010 GM 6.6L Duramax LLY/LBZ/LMM applications.
- Precision-machined from billet 6061 aluminum for excellent strength and durability.
- Black anodized finish with the Fleece Performance “F” logo for a clean, OEM+ appearance.
- Includes O-ring seals for a tight, leak-free seal at the turbo inlet.
- Eliminates the bulky plastic resonator and helps reduce potential failure points in the charge air tract.
- Pairs perfectly with upgraded intercooler pipes, turbochargers, and other Fleece Duramax performance parts.
- Backed by Fleece’s limited parts warranty for peace of mind.
Fitment
The Fleece FPE-RES-04.5-10 is engineered specifically for 6.6L Duramax LLY, LBZ, and LMM platforms. It installs in place of the stock turbo resonator on the compressor inlet.
- 2004.5–2005 Chevrolet Silverado 2500HD / 3500 6.6L LLY Duramax
- 2004.5–2005 GMC Sierra 2500HD / 3500 6.6L LLY Duramax
- 2006–2007 Chevrolet Silverado 2500HD / 3500 6.6L LLY/LBZ Duramax (classic body)
- 2006–2007 GMC Sierra 2500HD / 3500 6.6L LLY/LBZ Duramax (classic body)
- 2007.5–2010 Chevrolet Silverado 2500HD / 3500 6.6L LMM Duramax (new body)
- 2007.5–2010 GMC Sierra 2500HD / 3500 6.6L LMM Duramax (new body)
If your truck is a 2004.5–2010 Silverado or Sierra 2500/3500 with a factory 6.6L Duramax LLY, LBZ, or LMM turbocharger, this plug is designed to drop right in.
Why Choose the Fleece Duramax Billet Turbo Resonator Delete Plug?
The OEM plastic turbo resonator is bulky, unattractive, and can be a weak point in the intake tract over time. The Fleece FPE-RES-04.5-10 not only cleans up the engine bay but also removes an unnecessary restriction at the turbo inlet. With billet 6061 aluminum construction and a black anodized finish, it delivers the durability, sealing, and under-hood appearance serious Duramax owners expect from Fleece Performance.
Whether you’re installing a FLEECE FPE-VNT63-STREET 63MM FMW CHEETAH TURBOCHARGER, upgrading charge-air piping, or just freshening up a high-mileage LLY/LBZ/LMM, this resonator delete plug is the clean, permanent solution to the factory resonator.
Cross-Reference & Related Fleece Upgrades (CPP Diesel)
Pair this resonator delete plug with other Fleece Duramax turbo-support parts available at CPP Diesel:
- FLEECE FPE-VNT63-STREET 2004.5-2010 LLY/LBZ/LMM DURAMAX 63MM FMW CHEETAH TURBOCHARGER STREET – drop-in 63mm FMW VNT turbo upgrade for 2004.5–2010 Duramax.
- FLEECE FPE-DTFL-0116 REMOTE TURBO OIL FEED LINE KIT FOR 6.6L DURAMAX 2001-2016 – improves oil supply and reliability for stock or upgraded turbos.
- FLEECE FPE-DTFL-S3S4-0116 REMOTE TURBO OIL FEED LINE KIT (S300/S400) 2001-2016 DURAMAX – ideal when stepping up to S300/S400-based turbochargers.
- FLEECE FPE-TURBO-THERM DURAMAX TURBO THERMOSTAT DELETE PLUG – cleans up the coolant feed when running a non-water-cooled turbo and creates room for larger intake plumbing.
Specifications
Specifications for FLEECE FPE-RES-04.5-10
| Brand | Fleece Performance Engineering |
| Part Number | FPE-RES-04.5-10 |
| UPC | Not published by manufacturer |
| GTIN | Not published by manufacturer |
| Application | 2004.5–2010 Chevrolet/GMC Silverado & Sierra 2500HD/3500HD 6.6L Duramax LLY, LBZ, LMM (factory-style turbo inlet) |
| Engine | 6.6L Duramax LLY / LBZ / LMM |
| Material | Billet 6061 aluminum |
| Finish | Black anodized with Fleece “F” logo |
| Sealing | Includes O-rings for air-tight seal |
| Country of Origin | USA |
| Warranty | 1-year limited parts warranty (per Fleece Performance) |
| Approx. Shipping Weight | ~0.4 lb (0.38 lb typical listed weight) |
| Approx. Package Dimensions | Approx. 5.7" L x 3.4" W x 2.2" H (typical vendor listing) |
| Shipping Method | Standard small parcel (ground or air) |
| Cross Reference (Fleece) | FPE-RES-04.5-10 (this part); related Fleece turbo-support parts include FPE-VNT63-STREET, FPE-DTFL-0116, FPE-DTFL-S3S4-0116, FPE-TURBO-THERM. |
| E-Codes / Emissions | Not CARB certified. Intended for off-road / race use or 49-state applications where permitted. Check local and state emissions regulations before installation. |
| Prop 65 Warning | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov. |
FAQ
Does the Fleece FPE-RES-04.5-10 add power by itself?On its own, the resonator delete plug is primarily an airflow clean-up and reliability mod. You may notice slightly improved turbo response and a little more turbo sound, but the real benefit is removing a plastic failure point and opening up the inlet for future upgrades like intercooler piping and a Cheetah turbo.
Will this fit my stock LLY, LBZ, or LMM turbo?
Yes. This plug is designed as a direct replacement for the factory turbo resonator on 2004.5–2010 GM 6.6L Duramax LLY, LBZ, and LMM trucks using a stock-location turbocharger. If you are running a custom turbo or intake setup, verify that the turbo inlet uses the factory-style resonator boss.
Do I need to tune my truck after installing this resonator delete plug?
No tuning is required. The FPE-RES-04.5-10 simply replaces the resonator housing with a solid billet plug and does not change sensors, fueling, or vane control. It is often installed alongside other upgrades and tuning, but on its own it will not require calibration changes.
Is this part emissions legal in my state?
This part is not CARB certified and may not be legal for use on pollution-controlled vehicles in California or other strict-emissions states. Always review your local and state regulations before installing emissions-related parts and use this product in accordance with those laws.
What other Fleece parts pair well with this resonator delete on a Duramax?
Common companion upgrades include the FLEECE FPE-VNT63-STREET 63MM CHEETAH TURBOCHARGER, FLEECE FPE-DTFL-0116 and FPE-DTFL-S3S4-0116 remote turbo oil feed line kits, and the FLEECE FPE-TURBO-THERM turbo thermostat delete plug for non-water-cooled turbo setups. All of these are available at CPP Diesel and help build a cleaner, more reliable turbo system.
