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Shop / Intake & Airflow / Upgraded 3" Y-Bridge & Cold Side Intercooler Pipe Kit for 2006-2010 Chevy/GMC 2500HD/3500HD 6.6L Duramax LBZ LMM | SPELAB
Upgraded 3" Y-Bridge & Cold Side Intercooler Pipe Kit for 2006-2010 Chevy/GMC 2500HD/3500HD 6.6L Duramax LBZ LMM | SPELAB
Upgraded 3" Y-Bridge & Cold Side Intercooler Pipe Kit for 2006-2010 Chevy/GMC 2500HD/3500HD 6.6L Duramax LBZ LMM | SPELAB photo 1
Upgraded 3" Y-Bridge & Cold Side Intercooler Pipe Kit for 2006-2010 Chevy/GMC 2500HD/3500HD 6.6L Duramax LBZ LMM | SPELAB photo 2
Upgraded 3" Y-Bridge & Cold Side Intercooler Pipe Kit for 2006-2010 Chevy/GMC 2500HD/3500HD 6.6L Duramax LBZ LMM | SPELAB photo 3
SPELAB

Upgraded 3" Y-Bridge & Cold Side Intercooler Pipe Kit for 2006-2010 Chevy/GMC 2500HD/3500HD 6.6L Duramax LBZ LMM | SPELAB

MPN: SPIS202500000005
Daily DriverTow PigStreet Performance
$239
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---tab Description---

LBZ/LMM Duramax 3" Y-Bridge Pipe Kit Overview

If you are driving a 2006-2010 6.6L LBZ or LMM Duramax, your factory intercooler system has a ticking time bomb: the restrictive cast Y-Bridge and weak plastic cold-side piping. When you are towing a heavy 5th-wheel or pushing higher boost levels with an aftermarket tune, that factory plastic expands, cracks, and eventually blows out—leaving you stranded on the side of the highway with a massive boost leak.

Bulletproof Your Duramax with SPELAB. We’ve completely redesigned the airflow path for your LBZ/LMM. The SPELAB 3-Inch Y-Bridge and Cold Side Intercooler Pipe Kit replaces the restrictive factory bottlenecks with high-flow, 6061 mandrel-bent aluminum.

Upgraded by Popular Demand:   We listen to our builders. Based on customer feedback, this updated kit now includes   Premium Sealing Gaskets   to guarantee a 100% leak-free mating surface at the engine block. Combine that with our triple-layer silicone boots and constant-tension T-bolt clamps, and you have a system engineered to handle aggressive boost, lower your EGTs, and deliver unmatched reliability.

Y-Bridge and Cold Side Pipe Key Features

Massive 3" Airflow Upgrade

Upgrades the restrictive factory cast Y-bridge and plumbing to smooth, 3-inch mandrel-bent aluminum.   Eliminates airflow turbulence, dramatically improves throttle response, and reduces turbo lag for instant passing power.

Customer-Driven Upgrade (Premium Gaskets)

We’ve newly included custom-fit sealing gaskets for the Y-Bridge flange.   Takes the guesswork out of installation and ensures a perfect, leak-free seal against the intake runners, preventing power-robbing boost leaks.

Bulletproof 6061 Aluminum

Replaces the failure-prone factory plastic pipes with polished, high-strength aluminum.   Completely eliminates the risk of cracking or blowing a pipe under heavy towing loads or high-performance tuning.

Blowout-Proof Connections

Includes triple-reinforced silicone boots and stainless steel constant-tension T-bolt clamps.   Flexes with engine vibration but clamps down like a vice, ensuring your intercooler boots never slip off under extreme boost pressure.

Direct-Fit Engineering

Designed to work seamlessly with your factory turbocharger and intercooler.   Provides a straightforward, drop-in installation with absolutely no cutting, welding, or custom ECU tuning required.

Lower EGTs for Towing

A smoother, larger air path means less pressure drop.   Forces denser, colder air into the engine, helping to lower Exhaust Gas Temperatures (EGTs) when pulling heavy trailers up steep grades.

Y-Bridge and Cold Side Pipe Fitment

• 2006 Chevrolet/GMC 2500HD & 3500HD 6.6L LBZ Duramax

• 2007 Chevrolet/GMC 2500HD & 3500HD 6.6L LBZ Duramax

• 2007.5 Chevrolet/GMC 2500HD & 3500HD 6.6L LMM Duramax

• 2008 Chevrolet/GMC 2500HD & 3500HD 6.6L LMM Duramax

• 2009 Chevrolet/GMC 2500HD & 3500HD 6.6L LMM Duramax

• 2010 Chevrolet/GMC 2500HD & 3500HD 6.6L LMM Duramax

FITMENT & COMPATIBILITY NOTICE: This charge pipe kit is engineered strictly to match factory-spec (OEM) intercooler connection diameters and locations.

Specifications

Tubing Material

6061 Aluminum (Mandrel-Bent)

Pipe Diameter

3.0 Inches

Finish

Polished Silver

Coupler Material

Triple-Layer Reinforced Silicone

Gross Weight

5.0 kg (Approx. 11 lbs)

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LBZ/LMM Y-Bridge Pipe Kit FAQs

Q: What is the difference between this kit and the old version? A: We listen to our customers! While the aluminum piping and boots remain our top-tier quality, we have added   Premium Sealing Gaskets   to this new kit. This ensures a flawless, leak-free seal between the Y-Bridge and the engine, making installation easier and more reliable than ever.

Q: Does this kit fit both LBZ and LMM engines? A: Yes. This kit is precision-engineered to be fully compatible with both the 2006-2007 LBZ and the 2007.5-2010 LMM 6.6L Duramax platforms.

Q: Do I need to tune my truck after installation? A: No tuning is required! This kit is designed as a direct-fit hard-part upgrade. It improves airflow and reliability without altering emissions sensors that would require an ECU reflash.

Q: Will this work with my factory turbo and intercooler? A: Absolutely. The piping and boots are sized to mate perfectly with your OEM turbocharger and factory intercooler setup.

Q: Are all the clamps and boots included? A: Yes. The kit comes complete with all necessary triple-layer silicone boots, T-bolt clamps, sealing gaskets, and a heater hose for a complete installation.

Q: Do you sell Duramax intercooler pipe kits for other model years?

A: Yes! If you own a newer 2011-2016 Duramax, we have the LML Duramax intercooler pipe kit . And if you need the hot side for your 2006-2010 LBZ/LMM, we also carry the LLY Duramax hot side pipe kit .

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Fast Shipping Policy

Your order will be dispatched within 1-2 business days , and the package will arrive within your order's estimated date. Click for Shipping Policy

Easy Return Policy

Every order comes with a 14-day free return , which means you don't have to pay for a return slip. Click for Return Policy

Warranty
Warranty based on supplier terms

SPELAB Auto Parts: 1 year from delivery; supplier conditions apply. SPELAB offers a one-year limited warranty from delivery for material/workmanship defects under normal use, original purchaser only, with proof of purchase. Consumables, wear/cosmetic damage, improper installation, alteration, misuse and removal/installation labor are excluded. Approved remedies are repair, replacement or replacement parts at SPELAB’s discretion.

Return and warranty information is based on what SPELAB Auto Parts offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.

SPELAB Auto Parts warranty policyView complete warranty

Product conditions

Return and warranty information is based on what SPELAB Auto Parts offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.

Return eligibility
SPELAB allows return requests within 30 days of delivery, with authorization and undamaged goods, original packaging and accessories. Tuners are final sale. Customer pays voluntary return shipping; original shipping is not refunded. SPELAB pays return shipping for approved damaged, incorrect or manufacturing-defective items. Transit damage must be reported within two business days and incorrect items within seven days. Based on what SPELAB Auto Parts offers.
Return window
Not stated for this product; see supplier terms
Restocking fee
See supplier terms; no product-specific fee stated
Return shipping
Based on the supplier’s return policy; see terms
Made to order
No
Backorder status
Not backordered
Cancellation
Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
Warranty provider
SPELAB Auto Parts
Warranty duration
1 year from delivery; supplier conditions apply
Compatibility
Listed for specific vehicle configurations
Legal use
Street legal
Processing estimate
3–10 business days supplier processing
Shipping
Shipping calculated at checkout
Signature
No signature requirement
Supplier
SPELAB Auto Parts

Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.