Summit Racing SpeedCard - learn how to get 15% back up to $150

Make/Model Search
Make/Engine Search

Brands
Savings Central
Contact Us
Help Center

My Garage
Wish List
Order Status & Returns

Welcome
My Account

Order Status

Wish List
Savings Central
Shop by Brand
Shop Your Passion
- Shop Your Passion
- Truck / SUV
  
  Jeep®
  
  Restoration
  
  Stock Replacement
  
  Late Model Muscle
  
  Tools
  
  Gifts, Clothing, & More
  
  Circle Track
  
  Street Rod
  
  Powersports
  
  Paint & Body
  
  Marine
  
  Jr Dragster
Gift Cards
My Garage
See Our Catalogs
News & Events
Career Opportunities
Contact Us
Help Center
New Products
Shop by Make/Model
Sign In

Search Make/Model

Search Make/Engine

Sign In

Welcome
Account Dashboard
Profile
Order Status & Returns
Buy It Again
Wish List
Rewards Program
Gift Cards & Summit Bucks
Address Book
My Garage Settings
Email Preferences
Text Notifications
My Reviews
My Questions
Catalogs
Tax Exemption
Sign In

Summit Racing SpeedCard - learn how to get 15% back up to $150

$5 Off Your $100 Mobile App Purchase!

Filters

In Stock
- In Stock Items. Ships Today. (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (35) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Brand
- Bostech Auto (25) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Fleece Performance (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- BD Diesel (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Computer Type
- Engine control unit (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Emission control system (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Make/Engine
Engine Version
- N/R (5) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Duramax (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Power-Stroke (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Engine VIN Code
- F (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- L (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- P (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- S (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- T (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 1 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 2 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 8 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- M (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Y (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Quantity
- Sold individually. (10)
Price Range
In Stock

Selected Filters

Filter Results by Vehicle

Loading...

Home
Extension Harnesses
Product Results

Availability

- In Stock Items. Ships Today. (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (35) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters
Brand
- Bostech Auto (25) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Fleece Performance (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- BD Diesel (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Computer Type
- Engine control unit (7) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Emission control system (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Make/Engine
Engine Version
- N/R (5) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Duramax (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Power-Stroke (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Engine VIN Code
- F (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- L (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- P (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- S (3) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- T (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 1 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 2 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 8 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- M (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Y (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Quantity
- Sold individually. (10)
Price Range

Extension Harnesses

Individual Parts

Part Groups

Results 1 - 25 of 35

Fleece Performance Fan Extension Harnesses FPE-HAR-DMAX-FAN-LML

Fleece Performance Fan Extension Harnesses FPE-HAR-DMAX-FAN-LML

Fleece Performance Fan Extension Harnesses FPE-HAR-DMAX-FAN-LML

Duramax Fan Extension Harness (LML)

Part Number: FLE-S0475

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Fleece Performance Fan Extension Harnesses for 2013-2018 2500, 3500 - FPE-HAR-CUMM-FAN-1318

Fleece Performance Fan Extension Harnesses for 2013-2018 2500, 3500 - FPE-HAR-CUMM-FAN-1318

Fleece Performance Fan Extension Harnesses for 2013-2018 2500, 3500 - FPE-HAR-CUMM-FAN-1318

Extension Harness, Cooling Fan, Diesel, Ram, Each

Part Number: FLE-S0541

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Fleece Performance Fan Extension Harnesses for 2019-2024 2500, 3500 - FPE-HAR-CUMM-FAN-1924

Fleece Performance Fan Extension Harnesses for 2019-2024 2500, 3500 - FPE-HAR-CUMM-FAN-1924

Fleece Performance Fan Extension Harnesses for 2019-2024 2500, 3500 - FPE-HAR-CUMM-FAN-1924

Extension Harness, Cooling Fan, Diesel, Ram, Each

Part Number: FLE-S0566

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Fleece Performance Fan Extension Harnesses FPE-HAR-FMC-FAN-1118

Fleece Performance Fan Extension Harnesses FPE-HAR-FMC-FAN-1118

Fleece Performance Fan Extension Harnesses FPE-HAR-FMC-FAN-1118

Extension Harness, Cooling Fan, Diesel, Ford, 6.7L, Each

Part Number: FLE-S0571

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Fleece Performance Fan Extension Harnesses FPE-HAR-DMAX-FAN-L5P

Fleece Performance Fan Extension Harnesses FPE-HAR-DMAX-FAN-L5P

Fleece Performance Fan Extension Harnesses FPE-HAR-DMAX-FAN-L5P

Duramax Fan Extension Harness (L5P)

Part Number: FLE-S0476

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Fleece Performance Turbo Vane Position Sensor Harness Adapters FPE-HAR-DMAX-VPS-ADPT

Fleece Performance Turbo Vane Position Sensor Harness Adapters FPE-HAR-DMAX-VPS-ADPT

Fleece Performance Turbo Vane Position Sensor Harness Adapters FPE-HAR-DMAX-VPS-ADPT

Turbo Vane Position Sensor Adapter Harness for LLY Duramax

Part Number: FLE-S0477

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Fleece Performance Fuel Heater Extension Harnesses FPE-FH-FMC-1724-CC-EXT

Fleece Performance Fuel Heater Extension Harnesses FPE-FH-FMC-1724-CC-EXT

Fleece Performance Fuel Heater Extension Harnesses FPE-FH-FMC-1724-CC-EXT

Extension Harness, Fuel Heater, Cab and Chassis with Fleece Performance Fuel Heater, Ford, Each

Part Number: FLE-S0538

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

BD Diesel Fuel Pump Driver Relocation Harness 1036533

BD Diesel Fuel Pump Driver Relocation Harness 1036533

BD Diesel Fuel Pump Driver Relocation Harness 1036533

Extension Harness, Fuel Injection Pump Driver Extension Cable, 72 Inch, Each

Part Number: BDD-1036533

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

BD Diesel Fuel Pump Driver Relocation Harness 1036532

BD Diesel Fuel Pump Driver Relocation Harness 1036532

BD Diesel Fuel Pump Driver Relocation Harness 1036532

Extension Harness, Fuel Injection Pump Driver Extension Cable, 40 Inch, Each

Part Number: BDD-1036532

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH01851

Bostech Auto Extension Harnesses WH01851

Bostech Auto Extension Harnesses WH01851

Harness 1995-2001 General Motors 6.5L

Part Number: BTD-WH01851

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH01852

Bostech Auto Extension Harnesses WH01852

Bostech Auto Extension Harnesses WH01852

Harness 1995-2001 General Motors 6.5L

Part Number: BTD-WH01852

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH01853

Bostech Auto Extension Harnesses WH01853

Bostech Auto Extension Harnesses WH01853

Harness 1995-2001 General Motors 6.5L

Part Number: BTD-WH01853

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH01856

Bostech Auto Extension Harnesses WH01856

Bostech Auto Extension Harnesses WH01856

Harness 1995-2001 General Motors 6.5L

Part Number: BTD-WH01856

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH01857

Bostech Auto Extension Harnesses WH01857

Bostech Auto Extension Harnesses WH01857

Harness 1995-2001 General Motors 6.5L

Part Number: BTD-WH01857

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02007

Bostech Auto Extension Harnesses WH02007

Bostech Auto Extension Harnesses WH02007

Harness 2004-2007 Ford 6.0L PowerStroke

Part Number: BTD-WH02007

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02065

Bostech Auto Extension Harnesses WH02065

Bostech Auto Extension Harnesses WH02065

Harness 2000-2010 Ford 7.3L / 6.0L / 6.4L PowerStroke

Part Number: BTD-WH02065

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02067

Bostech Auto Extension Harnesses WH02067

Bostech Auto Extension Harnesses WH02067

Harness 1994-2010 Ford 7.3L / 6.0L PowerStroke

Part Number: BTD-WH02067

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02643

Bostech Auto Extension Harnesses WH02643

Bostech Auto Extension Harnesses WH02643

Harness 2008-2010 Ford 6.4l PowerStroke

Part Number: BTD-WH02643

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02646

Bostech Auto Extension Harnesses WH02646

Bostech Auto Extension Harnesses WH02646

Harness 2008-2010 Ford 6.4l PowerStroke

Part Number: BTD-WH02646

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02711

Bostech Auto Extension Harnesses WH02711

Bostech Auto Extension Harnesses WH02711

Harness 2003-2010 Ford 6.0L PowerStroke

Part Number: BTD-WH02711

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02712

Bostech Auto Extension Harnesses WH02712

Bostech Auto Extension Harnesses WH02712

Harness 2003-2010 Ford 6.0L PowerStroke

Part Number: BTD-WH02712

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02713

Bostech Auto Extension Harnesses WH02713

Bostech Auto Extension Harnesses WH02713

Harness 2003-2010 Ford 6.0L PowerStroke

Part Number: BTD-WH02713

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02954

Bostech Auto Extension Harnesses WH02954

Bostech Auto Extension Harnesses WH02954

Harness 2003 Ford 6.0L PowerStroke

Part Number: BTD-WH02954

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02955

Bostech Auto Extension Harnesses WH02955

Bostech Auto Extension Harnesses WH02955

Harness 2003 Ford 6.0L PowerStroke

Part Number: BTD-WH02955

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

Bostech Auto Extension Harnesses WH02956

Bostech Auto Extension Harnesses WH02956

Bostech Auto Extension Harnesses WH02956

Harness 2003 Ford 6.0L PowerStroke

Part Number: BTD-WH02956

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

...Loading

Estimated Ship Date: Tomorrow if ordered today

1
2
Next

Page 1 of 2
Next

Modal Header

Contact us with questions.

Call To Order

This is a custom order part. You can order this part by Contacting Us.

Summit Racing Speedcard. Synchrony Car Care.

Summit Racing Equipment SpeedCard

Jumpstart Your Next Project!

View Details|See if you Prequalify

Stay Updated with Emails from Summit Racing

Never miss a sale on new parts, tools, and more!

= Required

First Name

Last Name

Email Address Email required

See Our Catalogs

News & Events

News & Events Home
OnAllCylinders (blog)
Calendar of Events
New Product Releases
Summit Racing News
News You Can Use
Featured Vehicles
Media Center
Sanctioning Bodies

Help

Help Center
Return Policy
Beat-A-Price Guarantee
Payment Options
Contact Us

Social

Facebook
X/Twitter
Instagram
Pinterest
YouTube
Podcast

About Summit

Corporate History
Retail Locations

My Account

Profile
Email Preferences
Order Status & Returns
Wish List
Address Book
My Reviews
My Questions
My Garage
Sign In

Career Opportunities

More

Summit Racing Credit Card
Gift Cards
Calculators & Tools
Promo Exclusions
Become an Affiliate
Summit Racing Rewards Program
Summit Racing Equipment Protection Plan

Terms of Use | Privacy and Security | Site Accessibility
Copyright 2026 by AUTOSALES, INCORPORATED
dba Summit Racing Equipment | Trademarks

Let's Build it Together^™

Modal Header