99.5-03 7.3L CNC Fab Superduty 409 Stainless OEM Style Up Pipes - 421941

99.5-03 7.3L CNC Fab Superduty 409 Stainless OEM Style Up Pipes PN: 421941 Bring new life to your 1999.5-2003 (Early 99) Ford 7.3L Powerstroke Diesel engine with our CNC Fabrication OEM Style Up Pipes, model number 421941. These high-quality up pipes are the perfect solution for diesel enthusiasts seeking affordability without compromising on performance and durability. Over time, original up pipes can develop leaks due to worn-out donut gaskets, leading to pressure loss that affects turbo boost, fuel efficiency, and even cabin air quality. With our expertly designed up pipes, you can eliminate these issues and enjoy a smoother driving experience. These also feature a larger flare surface for better sealing onto your exhaust manifolds. Constructed from premium USA-made 409 stainless steel, these up pipes feature CNC mandrel bending for superior integrity and precision; they ensure flawless bends without any distortion of the tubing's outer diameter—yielding better sealing into your vehicle’s Y-bridge. These also feature a larger flare surface for better sealing onto your exhaust manifolds. Key Features: Superior Quality: Built to endure the demands of real-world truck use. New Fasteners: Comes equipped with durable grade 10.9 Yellow Zinc plated fasteners for secure installation. New Gaskets: Includes a full set of Mahle gaskets to ensure optimal sealing. Precision Engineering: Each unit is meticulously manufactured using advanced CNC technology for an exact fit. Made In The USA Upgrade your Powerstroke today with these robust and reliable up pipes—engineered for performance, built to last, all while proudly made in the USA! **You will re-use your factory Y-bridge and 2-bolt flanges on both ends** **It is highly recommended that you spray down the old bolts with penetrating oil days before you are going to decide to replace your old up pipes. Spraying and driving a few days in a row will certainly help get the old bolts out**