Universal Stainless Steel Lap Joint 4" Exhaust Clamp (DDC-4J)

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Dirty Diesel Customs Part Number: DDC-4J

$14.95 CAD

Size

4" 5"

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Warranty

Description

Fits: Any 4" Exhaust System

The DDC-4J is a universal 4" stainless steel lap joint exhaust clamp built to securely connect overlapping pipes without crushing them. Unlike standard U-bolt clamps, this design maintains the pipe's shape, making future exhaust modifications or adjustments quick, easy, and precise. Perfect for high-performance diesel setups, it ensures reliable fitment and long-lasting durability against the elements.

Note: This is a lap-joint style clamp designed to connect two pipes of the same diameter where one slips over the other. Ensure surfaces are clean before installation.

Why Shop Dirty Exhausts?
When you buy from Dirty Diesel, you’re buying peace of mind. We’ve put in the work to bring you exhaust systems and components that meet our strict standards for durability and flow. Every item is vetted for quality and long-term performance, ensuring you get professional-grade hardware without the headache of subpar materials.

Part Number: DDC-4J

Features

Universal Fitment for any 4" Exhaust System
T409 Stainless Steel Construction for Corrosion Resistance
Lap-Joint Design Prevents Pipe Distortion/Crushing
Allows for Easy Pipe Adjustment or Removal
High-Strength Grade 8 Hardware
Torque Specification: 50 ft-lbs

Warranty

We overengineer everything we make. It's manufactured to last and tested to prove it, and if by some strange anomaly it ever lets you down, we'll fix it, have a word with whoever built it, and come back stronger. That's the Dirty Lifetime Warranty. Click here for all the details.

Questions and Answers

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Customer Reviews

Overall rating: 4.8 / 5 from 4 reviews.

Customer photo review of Dirty Diesel Customs Stainless Steel Lap Joint Exhaust Clamp (LJ400SS)

I just finished installing my 4'' turbo back system from P1, on my 14 Ram. Everything went super smooth. The fit was amazing, and installed without a hitch. The system sounds amazing and has a tolerable drone (without a resonator), and is only present above 2000 rpm on the highway and even then, it's not that bad. No complaints here. I ordered the parts and received them 2 days later. Great customer service from Dirty Diesel. I will use them again. .

David B. 5/5 Verified January 13, 2026