Muffler

Top-Quality Mufflers

Heavy‑duty machines demand quiet power — and that’s exactly what a quality muffler delivers. Whether you’re operating a CAT, Komatsu, or another major excavator brand, a dependable muffler (or silencer) ensures smooth exhaust flow, reduced noise, and efficient engine performance.

At FridayParts, we supply a full range of aftermarket excavator mufflers built to OEM‑level quality standards, precision‑fit for your machine model, and engineered to handle the toughest work environments — all at competitive prices.

Why Upgrade Your Excavator Muffler

Over time, exposure to heat, vibration, and exhaust gases can cause mufflers to corrode, crack, or lose internal structure. Replacing a failing muffler restores:

• Optimal backpressure for improved fuel efficiency and engine longevity
• Reduced exhaust noise for safer and more comfortable operation
• Cleaner emissions and compliance with work‑site regulations
• Long‑term reliability — built from high‑grade steel with anti‑corrosion finishes

Whether you’re servicing a single excavator or managing a large fleet, FridayParts offers direct‑fit replacement mufflers that deliver OEM‑grade performance without OEM‑level prices.

Popular Muffler Categories

Find the perfect aftermarket muffler for your excavator series below. Every model is engineered for durability, fit, and performance in real job‑site conditions.

1️⃣ Excavator Mufflers

Our Excavator Muffler collection covers multiple brands and models — from compact utility machines to heavy‑duty earthmovers. You’ll find direct‑fit replacements compatible with leading engine series like 4D95, 6D102, C9, C13, and more.

Each aftermarket muffler undergoes strict quality inspections to ensure smooth exhaust flow, reduced vibration, and long‑lasting corrosion resistance.

2️⃣ CAT Mufflers

Experience the power of quiet with our Aftermarket CAT Mufflers, designed for the entire 300‑Series and E‑Series lineup — including 320D, 325D, 330C, 336D, 345C, 349D, and more.

Key engine compatibility: 3066, C7, C9, C13

Built to meet or exceed OEM specifications, CAT mufflers from FridayParts combine precise fitment, premium steel construction, and optimized backpressure tuning.

3️⃣ Komatsu Mufflers

Keep your Komatsu excavator running quietly and efficiently with our Aftermarket Komatsu Mufflers — covering everything from compact models like PC40 / PC75 to large units such as PC300 / PC400 / PC450.

Compatible engine families include 4D95, 6D102E, S6D125E, SAA6D114E, SAA6D125E, and more.

Each muffler is precision‑fabricated for leak‑free installation and long‑term durability, tested under real‑world load and temperature conditions.

Built for Performance

At FridayParts, every muffler is backed by:

• Expert engineering to maintain proper exhaust flow and pressure balance
• OEM‑fit accuracy for quick installation
• Corrosion‑resistant coatings and superior weld integrity
• Comprehensive global inventory ready for fast shipment

Extend the life of your excavator and minimize downtime with a FridayParts muffler — where durability meets affordability.