Product Description
Fix those leak-prone factory lines and improve transmission cooling on your 2006–2010 LBZ/LMM Duramax with the FLEECE FPE-TL-LBZ-LMM Allison Transmission Cooler Line kit. This complete, heavy-duty, high-flow package includes correct fittings for both stock and Setrab radiators, delivering clean routing, reliable sealing, and OE-grade durability.
Why it wins
- High-flow 5/8" ID lines for better cooling capacity
- Includes all required fittings (stock or Setrab radiator)
- Durable hose, clamps, and hardware for long service life
- Designed and supported by Fleece Performance Engineering
Fitment
Vehicles: 2006–2010 Chevrolet/GMC 2500HD/3500HD with 6.6L Duramax LBZ or LMM.
Transmission: Allison 1000 (6-speed).
Radiator compatibility: Works with stock or Setrab-equipped radiators (fittings included).
Kit contents
- (6) 5/8" ID transmission lines
- (2) 7/8"-14 O-ring to -10AN fittings
- (2) M22x1.5 to -10AN Setrab fittings with large OD washers
- Double hose clamps and locking cable ties
Cross-Reference / Related Fleece Items (CPP Diesel)
- FLEECE FPE-TL-LB7-LLY – 2001–2005 LB7/LLY Cooler Lines
- FLEECE FPE-TL-LML-1114 – 2011–2014 LML Cooler Lines
- FLEECE FPE-TL-LML-1516 – 2015–2016 LML Cooler Lines
- FLEECE FPE-TL-LBZ-LMM-SHORT-SER – Replacement Short Line (LBZ/LMM)
- FLEECE FPE-TL-LB7-LMM-MED-SER – Replacement Medium Line (LB7–LMM)
- FLEECE FPE-TL-LB7-LMM-LONG-SER – Replacement Long Line (LB7–LMM)
Yes. The kit replaces leak-prone factory hard lines with flexible, high-flow assemblies and correct fittings for stock or Setrab radiators.
Is any cutting or special tooling required?
No specialty tools are required beyond standard hand tools. The kit includes fittings, clamps, and hardware for a straightforward install.
Will these lines change shift quality?
No tuning changes are required. The benefit is improved sealing and cooling capacity from the larger-ID lines.
Are Setrab radiators supported?
Yes. Dedicated Setrab fittings and large-OD washers are included in the box.
Prop 65 information
California Proposition 65 warning applies; see the Specifications table below for details.
Specifications for FLEECE FPE-TL-LBZ-LMM
| Attribute | Value |
|---|---|
| Brand | Fleece Performance Engineering |
| Part Number | FPE-TL-LBZ-LMM |
| UPC | 635909311010 |
| GTIN | 00635909311010 |
| Compatibility | 2006–2010 Chevy/GMC 2500HD/3500HD, 6.6L Duramax LBZ/LMM, Allison 1000 (6-speed) |
| Kit Contents | (6) 5/8" ID lines; (2) 7/8"-14 O-ring to -10AN; (2) M22x1.5 to -10AN Setrab fittings + large OD washers; clamps & ties |
| Cross Reference | FPE-TL-LB7-LLY; FPE-TL-LML-1114; FPE-TL-LML-1516; FPE-TL-LBZ-LMM-SHORT-SER; FPE-TL-LB7-LMM-MED-SER; FPE-TL-LB7-LMM-LONG-SER |
| E-codes | Not applicable |
| Shipping Method | Standard ground (small parcel) |
| Package Weight | ~5 lb (typical listing) |
| Country of Origin | USA (commonly listed) |
| Prop 65 | Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
