# Fleece Performance 17-22 GM 2500/3500 Duramax MAP Sensor Spacer & Boost Reference Port

Fleece Performance MAP Sensor Spacer with Boost Reference Port for the L5P Duramax. Problem: Because of the direct placement of the MAP sensor into the intake air stream from the factory, soot buildup becomes an ongoing problem. This requires the sensor to be routinely cleaned or replaced. Solution: The Fleece Performance MAP sensor spacer moves the sensor from the direct intake air stream to reduce soot buildup over time and eliminate the need to routinely clean or replace the sensor. The spacer block also integrates a 1/8" NPT port to allow for installation of an auxiliary intake air pressure gauge. Application Notes Fits 2017-2024 L5P 6.6L Duramax

This Part Fits:

Year

Make

Model

Submodel

2021-2024

Chevrolet

Silverado 2500 HD

Custom

2017-2024

Chevrolet

Silverado 2500 HD

High Country

2017-2024

Chevrolet

Silverado 2500 HD

LT

2017-2024

Chevrolet

Silverado 2500 HD

LTZ

2017-2024

Chevrolet

Silverado 2500 HD

WT

2024

Chevrolet

Silverado 2500 HD

ZR2

2017-2024

Chevrolet

Silverado 3500 HD

High Country

2017-2024

Chevrolet

Silverado 3500 HD

LT

2017-2024

Chevrolet

Silverado 3500 HD

LTZ

2017-2024

Chevrolet

Silverado 3500 HD

WT

2020-2024

GMC

Sierra 2500 HD

AT4

2024

GMC

Sierra 2500 HD

AT4X

2017-2021

GMC

Sierra 2500 HD

Base

2017-2024

GMC

Sierra 2500 HD

Denali

2024

GMC

Sierra 2500 HD

Denali Ultimate

2022-2024

GMC

Sierra 2500 HD

Pro

2017-2024

GMC

Sierra 2500 HD

SLE

2017-2024

GMC

Sierra 2500 HD

SLT

2020-2024

GMC

Sierra 3500 HD

AT4

2017-2021

GMC

Sierra 3500 HD

Base

2017-2024

GMC

Sierra 3500 HD

Denali

2024

GMC

Sierra 3500 HD

Denali Ultimate

2022-2024

GMC

Sierra 3500 HD

Pro

2017-2024

GMC

Sierra 3500 HD

SLE

2017-2024

GMC

Sierra 3500 HD

SLT

## Details

- **Price:** 117.93 CAD
- **Vendor:** Fleece Performance
- **Type:** Fittings

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 117.93 CAD | In stock |

## Images

- Photo - Primary
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- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/fleece-performance-17-22-gm-2500-3500-duramax-map-sensor-spacer-boost-reference-port)
> Updated: 2026-06-27