If you're looking to seal up your fuel, oil, or coolant lines with confidence, the TSP-4039 AN Swivel Nut Flare Caps from Texas Speed & Performance are an essential upgrade for your ride. Designed for car owners who prioritize performance and reliability, these flare caps are crafted from high-quality 6061 aluminum and finished with a sleek black anodization that not only looks great but also provides superior corrosion resistance.
When it comes to preventing leaks, these flare caps are built to meet tight tolerances, ensuring a secure fit that keeps contaminants out. Whether you're a weekend warrior or a dedicated track racer, you know that every drop counts. With the TSP-4039, you can trust that your fluids stay where they belong, allowing you to focus on what really matters — performance.
“I installed these caps on my 2021 Mustang GT after upgrading my fuel system, and they fit perfectly. No leaks, and they give my engine bay a clean look!” - Mustang GT owner
“Used these on my 2019 Silverado’s oil system. They sealed tightly and have held up great against the elements.” - Silverado owner
Don't leave your performance to chance. Equip your vehicle with the TSP-4039 AN Swivel Nut Flare Caps and experience the peace of mind that comes with quality engineering.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Texas Speed and Performance began as a small business in 2003. Texas Speed and Performance is situated in Georgetown, Texas, and is a leader in the LSx sector. Texas Speed & Performance has quickly established itself as one of the largest performance makers and retailers of premium LSX and LT1 packages in the United States. Texas Speed and Performance founders, Trevor Doelling and Jason Magnum, have a combined 30+ years of experience in the high-efficiency sector and are constantly striving to research and manufacture the highest quality performance goods for your car. This is accomplished by putting their products through their paces on their in-house futuristic super flow engine dyno. Texas Speed and Performance components can be found in some of the fastest street and competition automobiles in the country.
WHY CHOOSE TEXAS SPEED AND PERFORMANCE?Texas Speed and Performance provides all levels of aftermarket performance products from LSx and 2014+ 6.2L LT1/LT4 performance parts, aftermarket cast cylinder heads, basic air induction exhaust, camshafts, stroker engines and in-house machining of all their engines. They are one of the largest LSx and 2014+ 6.2L LT1/LT4 specific shops in the country. Owing to their in-house cylinder head manufacturing, engine assembly, and camshaft grinding facility, they assist customers with all of their high-performance LSx and 2014+ 6.2L LT1/LT4 needs and requirements.
TEXAS SPEED AND PERFORMANCE PRODUCT LINETexas Speed and Performance Exhaust offers camshafts, short and long blocks, turn-key engines, valvetrain, crankshafts, rods, and aftermarket cylinder heads.
VIVID RACING-TEXAS SPEED AND PERFORMANCEThe Texas Speed and Performance products at Vivid Racing include the Texas Speed and Performance Stage 4.2 LS7 Camshaft Chevrolet Camaro, Corvette 2006-2015, which has fitment for the Chevrolet Camaro 2012-2015 and Chevrolet Corvette 2006-2013 models.