4-Tube Steel Metallic Ceramic Coated Long Tube Exhaust Headers (D103) by Doug's Headers®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 3". Color: Silver. Header Coating: Ceramic. Header Style: Long Tube. Doug's headers are carefully

Doug's Headers D103 - 4-Tube Steel Metallic Ceramic Coated Long Tube Exhaust Headers

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Description

4-Tube Steel Metallic Ceramic Coated Long Tube Exhaust Headers (D103) by Doug's Headers®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 3". Color: Silver. Header Coating: Ceramic. Header Style: Long Tube. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.



Collector Diameter: 3"

Inlet Port Shape: Same As Port

Port shape: Same As Port

 

Doug's Headers D3373 Metallic Ceramic Coating

3/8" thick flanges

CNC mandrel bent tubes... accurate fit & better flow

Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower

Heavy 16 gauge tubing

Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier

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Series: 4-Tube

Header Material: Steel

Finish: Metallic Ceramic Coated

Header Style: Long Tube

Primary Diameter: 1.75"

Collector Diameter: 3"

Inlet Port Shape: Same As Port

Port shape: Same As Port

 

Doug's Headers D3373 Metallic Ceramic Coating

3/8" thick flanges

CNC mandrel bent tubes... accurate fit & better flow

Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower

Heavy 16 gauge tubing

Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier

Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier

 
Doug's Headers® are ideal for muscle cars, street rods, and race cars, as well as trucks, SUVs, and motorhomes. With more than 50 years of experience, Doug's Headers is a name you can trust for superior quality and fit. Doug has been elected to five different drag racing halls of fame and is truly a pioneer in the manufacturing of high performance exhaust systems!

Vehicle Fitment Summary

To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table. Also review the notes section in the Compatibility Chart for additional specifications about this part.

Years
Make
Model
Submodel
Type
Engine
Engine Type
Engine Size
Engine Size (Cc)
Engine Horsepower
Fuel Type
Transmission
Interchange
Fitment
Vehicles

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30-Day Return Policy

We accept authorized returns within 30 calendar days from the date the product was received by the buyer. All returns must be preapproved and have a Return Merchandise Authorization (RMA) before returning. All authorized returns must be unused and in their original packaging, including all items and components that were included in the original package. We will not accept items that have been disassembled, mounted, modified, or damaged due to incorrect installation or user error.


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For orders delivered within the continental US where the reason for return isn't a result of a Shop Tucky’s error, the cost of the initial shipping charge and a return fee will be deducted from your refund. If you refuse delivery or the carrier returns a package because you provided an invalid address, the cost of return shipping will be deducted from your refund. A prepaid shipping label(s) will be provided. 

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