17345 For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Force II® cat-back exhaust system provides, the S.O.S. (Single out side) systems are the perfect choice. The 3.00-inch mandrel-bent aluminized steel tubing flows into a large case 70 Series™ Big Block II performance muffler that delivers a deep moderate exterior tone while retaining a mild to moderate interior tone. The 3.00-inch tailpipe uses the factory hanger locations for an easy installation and is finished off with a large 3.50-inch polished 304 stainless steel tip. This system is best suited towards customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and is covered by our 3-year Limited Warranty. For those who prefer a full stainless steel exhaust system covered by our Lifetime Limited Warranty, check out system # 817345. Notes: Fits 2 and 4 wheel drive models. Features: Includes Hangers and Hardware for an Easy Installation Large 3.50-inch Polished 304 Stainless Steel Tip Mandrel-bent 16-gauge Aluminized Steel Tubing 70 Series Big Block II Performance Muffler Mild to Moderate Exterior Exhaust Tone Dyno Tuned for Maximum Performance Includes a 3-year Limited Warranty Uses the Factory Hanger Locations Minimal Interior Sound Easy Installation About Flowmaster Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound. SPECS 2WD/4WD 2WD/4WD Brand Flowmaster Clearance Category Exhaust Emission Code 5 Exhaust Series Force II Exit Position Single Side Exit Heat Shield No Inlet Diameter (in) 3 Material Aluminized Steel Muffler Part Number 53073 Muffler Quantity 1 Muffler Series 70 Series Big Block Outlet Diameter (in) 3 Product Type Exhaust System Single Dual Single Sound Level Moderate/Mild System Type Cat-back Tip Diameter (in) 3.5 Tip Quantity 1 Tubing Diameter (in) 3 UPC 700042017973 California Proposition 65 Chemical Name Chromium (hexavalent compounds) Nickel (Metallic) California Proposition 65 Required Yes Part Number 17345 EMISSIONS 5 This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations. TECH RESOURCES Instructions for Part# 17345 Warranty for Part# 17345 Fits 1999-2004 Ford F-250/F-350 trucks with V8 or V10 engine. Fits 2 and 4 wheel drive models.