---
product_id: 363454593
title: "JY PERFORMANCE 4 Inch Inlet Diesel Muffler Exhaust with Clamp- 7\" x 24\" Body - 30\" OAL - Straight Through - Stainless Steel - Welded On Resonator, Polished - TIG Welding"
brand: "jy performance"
price: "$396"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/363454593-jy-performance-4-inch-inlet-diesel-muffler-exhaust-with-clamp
store_origin: NZ
region: New Zealand
---

# Polished stainless steel finish 4" inlet/outlet precision fit TIG welded for ultimate durability JY PERFORMANCE 4 Inch Inlet Diesel Muffler Exhaust with Clamp- 7" x 24" Body - 30" OAL - Straight Through - Stainless Steel - Welded On Resonator, Polished - TIG Welding

**Brand:** jy performance
**Price:** $396
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate your diesel game with unmatched style and performance!

## Quick Answers

- **What is this?** JY PERFORMANCE 4 Inch Inlet Diesel Muffler Exhaust with Clamp- 7" x 24" Body - 30" OAL - Straight Through - Stainless Steel - Welded On Resonator, Polished - TIG Welding by jy performance
- **How much does it cost?** $396 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/363454593-jy-performance-4-inch-inlet-diesel-muffler-exhaust-with-clamp)

## Best For

- jy performance enthusiasts

## Why This Product

- Trusted jy performance brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust TIG Welding:** Engineered for maximum strength and leak resistance
- • **Integrated Resonator:** Effectively absorbs unwanted noise for a refined ride
- • **Straight-Through Design:** Minimizes backpressure for enhanced engine performance
- • **Sleek Polished Stainless Steel:** Corrosion-resistant with a showroom-worthy shine
- • **Precision 4-Inch Inlet & Outlet:** Seamless fit for optimized diesel exhaust flow

## Overview

The JY PERFORMANCE 4 Inch Inlet Diesel Muffler Exhaust features a 30-inch overall length with a 7-inch polished stainless steel body. Designed with precision 4-inch inlet and outlet diameters, it boasts a straight-through configuration and TIG welded construction for durability and anti-rust protection. Its integrated resonator reduces interior noise, making it a high-performance, long-lasting upgrade for diesel vehicles.

## Description

JY PERFORMANCE 4 Inch Inlet Diesel Muffler Exhaust with Clamp- 7" x 24" Body - 30" OAL - Straight Through - Stainless Steel - Welded On Resonator, Polished - TIG Welding

## Features

- Inlet: 4" ID (Inner Diameter) - Outlet: 4" ID (Inner Diameter) - Overall Length: 30" - Body Length: 24" - Body Type: 7" Round - Style. No Inlet or Outlet Difference.
- Straight Through with TIG Welding Design
- Stainless Steel Construction for Long-Lasting and Anti-Rust
- Absorbs Unwanted Interior Resonance
- Body with Polish Surface Finished

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | JY PERFORMANCE |
| Item dimensions L x W x H | 31 x 8 x 8 inches |
| Vehicle Service Type | Diesel muffler |
| Configuration | Center/Center |
| Shape | Round |
| Inlet Connection Size | 4 Inches |
| Outlet Connection Size | 4 Inches |
| UPC | 850068137039 |
| Manufacturer | JY Performance |
| Global Trade Identification Number | 00850068137039 |
| Model | DIESEL MUFFLER |
| Item Weight | 10 pounds |
| Product Dimensions | 31 x 8 x 8 inches |
| Item model number | DAC187 |
| Exterior | Polished |
| Manufacturer Part Number | DAC187 |

## Product Details

- **Brand:** JY PERFORMANCE
- **Item dimensions L x W x H:** 31 x 8 x 8 inches
- **Vehicle Service Type:** Diesel muffler
- **Configuration:** Center/Center
- **Shape:** Round

## Images

![JY PERFORMANCE 4 Inch Inlet Diesel Muffler Exhaust with Clamp- 7" x 24" Body - 30" OAL - Straight Through - Stainless Steel - Welded On Resonator, Polished - TIG Welding - Image 1](https://m.media-amazon.com/images/I/61k8I2F4d8L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Is this a clamp on or weld on?**
A: It could be. Normally I use a 5 inch ss band clamp.

**Q: I have a horrible drone sound around 2000 rpm and currently have a shorter 5" straight through muffler on my 3500. diesel truck.  Looking to just tow.**
A: The JY quieted my Ram 2500 Cummins diesel exhaust to a tolerable level. It is NOT a muffler, more like an expansion chamber or resonator. It does work to reduce sound, but not like a muffler.

**Q: Can this fit on a 2011 Freightliner Cascadia**
A: I suppose you can fit it in their it would need some customizing  i put a similar 5 incher on a freightshaker the one i used i got from summit racing and was originally for a diesel pickup but works great sounds awesome  and is holding up well

**Q: Will this muffler passed inspection?  pennsylvania is cracking down on that and i need a muffer asap on my 5" exhaust.  thanks in advance.**
A: I’m not familiar with Pennsylvania inspection laws; we live in Tennessee

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**Shop now:** [https://www.desertcart.nz/products/363454593-jy-performance-4-inch-inlet-diesel-muffler-exhaust-with-clamp](https://www.desertcart.nz/products/363454593-jy-performance-4-inch-inlet-diesel-muffler-exhaust-with-clamp)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-27*