# Fleece Performance 98.5-07 Dodge 2500/3500 Cummins Replacement Thermostat Housing w/Aux Port

The Fleece Performance replacement thermostat housing with auxiliary port is a direct replacement part for model years 1998.5-2007 RAM with 5.9L Cummins and 2013-2018 RAM with 6.7L Cummins. The auxiliary port is threaded to accept a -10AN (7/8"-14) fitting to allow you to customize your coolant routings and includes port plug FPE-SP-7814. APPLICATION NOTES Direct replacement for thermostat elbow included in our coolant bypass kits: FPE-CLNTBYPS-CUMM-0712 and FPE-CLNTBYPS-CUMM-1318. Direct replacement for Cummins part numbers 5283433 and 3943297. Auxiliary port is threaded to accept a -10AN (7/8"-14) fitting.

This Part Fits:

Year

Make

Model

Submodel

1998-2002

Dodge

Ram 2500

Base

2003,2005-2007

Dodge

Ram 2500

Laramie

2003-2007

Dodge

Ram 2500

SLT

2006-2007

Dodge

Ram 2500

Sport

2003-2007

Dodge

Ram 2500

ST

2006-2007

Dodge

Ram 2500

TRX4

1998-2002

Dodge

Ram 3500

Base

2003-2007

Dodge

Ram 3500

Laramie

2003-2007

Dodge

Ram 3500

SLT

2006-2007

Dodge

Ram 3500

Sport

2003-2007

Dodge

Ram 3500

ST

2007

Dodge

Ram 3500

TRX4

2013-2018

Ram

2500

Big Horn

2013-2018

Ram

2500

Laramie

2014-2015

Ram

2500

Laramie Limited

2013-2018

Ram

2500

Laramie Longhorn

2016-2018

Ram

2500

Limited

2013-2015

Ram

2500

Lone Star

2013-2016

Ram

2500

Outdoorsman

2013-2018

Ram

2500

SLT

2013

Ram

2500

ST

2013-2018

Ram

2500

Tradesman

2013-2018

Ram

3500

Big Horn

2013-2018

Ram

3500

Laramie

2014-2015

Ram

3500

Laramie Limited

2013-2018

Ram

3500

Laramie Longhorn

2016-2018

Ram

3500

Limited

2013-2015,2017

Ram

3500

Lone Star

2013-2018

Ram

3500

SLT

2013

Ram

3500

ST

2013-2018

Ram

3500

Tradesman

## Details

- **Price:** 202.11 CAD
- **Vendor:** Fleece Performance
- **Type:** Thermostat Housings

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 202.11 CAD | In stock |

## Images

- Photo - Primary
- User 1
- User 9
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/fleece-performance-98-5-07-dodge-2500-3500-cummins-replacement-thermostat-housing-w-aux-port)
> Updated: 2026-06-27