FLEECE FPE-T4PED-SPACER1.5 1.5 INCH T4 PEDESTAL SPACER

Solve tight turbo clearances and clean up your T4 install with the FLEECE FPE-T4PED-SPACER1.5 1.5 INCH T4 PEDESTAL SPACER. This black, 1.5-inch thick pedestal spacer raises your T4 turbo out of the engine valley to help clear manifolds, piping, and accessories on aggressive Duramax builds and custom swaps, without compromising alignment or flow. Fleece FPE-T4PED-SPACER1.5, 1.5 inch T4 pedestal spacer, Duramax T4 turbo spacer, universal T4 spacer, Fleece turbocharger accessories, CPP Diesel Fleece Performance

Designed by Fleece Performance Engineering, this spacer is a go-to upgrade when an extra 1.5 inches of height makes the difference between a cramped, heat-soaked install and a clean, serviceable turbo setup. Whether you are routing big hot-side piping, running a larger-frame turbo, or dialing in a compound kit, this pedestal spacer gives you the vertical room you need.

Key Features

• 1.5" thick T4 pedestal spacer for additional turbo elevation
• Ideal for Duramax T4 turbo conversions and custom T4 applications
• Black finish for a clean, professional under-hood appearance
• Machined for precise T4 flange alignment and sealing
• Perfect for solving downpipe, firewall, and manifold clearance issues

Fitment

Primary Use: T4 turbos installed on GM 6.6L Duramax engines where an extra 1.5" of elevation out of the valley is required (common on 2001–2016 Duramax T4 conversion kits).
Flange: Standard T4 turbo pedestal pattern (universal T4 footprint).
Applications: Duramax single-turbo and compound-turbo setups, plus any custom T4-based diesel or gas build needing added height.
Notes: A T4 gasket should be used on the top and bottom of the spacer to ensure proper sealing.

This spacer is not limited to Duramax—its universal T4 design means it can be used in virtually any T4 turbo application where more vertical clearance is needed. From swapped older Cummins projects to custom hot rod builds, it’s a simple, bolt-in solution.

Cross-Reference / Related Fleece Items (CPP Diesel)

• FLEECE FPE-T4PED-SPACER1.0 1.0 INCH T4 PEDESTAL SPACER
• FLEECE FPE-34113 7/8 INCH BILLET ALUMINUM UNIVERSAL BLOCK OFF PLUG
• FLEECE FPE-CTDT-KIT CUMMINS TURBO DRAIN TUBE KIT FOR 2ND GEN SWAPS

Pair this spacer with Fleece turbo drain adapters, block-off plugs, and S300/S400 hardware to build a reliable, leak-free turbo system with professional-level fit and finish.

Yes. For best results, a new T4 gasket should be used on both the top and bottom of the spacer. This ensures proper sealing and helps prevent exhaust leaks under boost.

No. While it is commonly used on 6.6L Duramax T4 conversions, the spacer has a universal T4 pattern and can be used on almost any T4 turbo application where extra height is needed.

In typical builds, the added height has negligible impact on performance compared to the gains from proper clearance and cleaner routing. The spacer is designed to maintain proper flange alignment and flow.

The 1.0" spacer is ideal for minor clearance issues, while the 1.5" spacer offers more room for larger turbos, bigger downpipes, or tight firewall and manifold situations. Many high-clearance or compound setups favor the 1.5" version.

This listing is for the pedestal spacer itself. Reuse appropriate hardware where possible and source quality T4 gaskets for the top and bottom sealing surfaces.

Yes. As with many automotive performance products, this part is subject to California Proposition 65. See the specifications table below for the full statement and link.

Specifications for FLEECE FPE-T4PED-SPACER1.5