1966 C2 427-425 1967-1968 L88 Fuel Pump - Carb Lines TBW 3 Pieces 3886152 - OEM Number(s) (3886152)
Fuel delivery at this level deserves factory-correct lines. This 3-piece Tin Bundy Weld (TBW) fuel line set is designed specifically for high-horsepower big blocks, including the 1966 L72 427/425hp and the legendary 1967–1968 L88 427/430hp Corvettes. These lines route fuel from the mechanical pump to the factory-positioned Holley carburetor using correct bends and OE-style tubing. Whether you’re restoring a concours-level L72 or preserving an authentic L88, this set eliminates the risk of rusty, kinked, or mismatched aftermarket plumbing.
Features
• Correct for 1966 L72 427/425hp and 1967–1968 L88 427/430hp Corvettes
• Reproduction of GM# 3886152
• 3-piece Tin Bundy Weld (TBW) fuel line set from pump to carburetor
• Pre-bent to factory specifications for OE routing and fit
• Preserves indexing between original-style fuel pump and carb inlet
• Eliminates fuel delivery issues caused by rust, kinks, or incorrect angles
• Made from OE-style TBW steel for proper look and function
Tech Notes
GM originally used Tin Bundy Weld (TBW) tubing for fuel and transmission lines on all high-output big blocks. The brazed seam construction provides corrosion resistance and flexibility under engine vibration. Some OEM pumps or carbs used reducers at the inlets/outlets—these may need to be reused from your original components to maintain a proper seal.
Because Details Matter
From L72 street legends to L88 race-bred beasts, these fuel lines deliver performance and authenticity in one clean install. No more guessing, no more bending—just factory-correct flow, just like St. Louis intended.
Also known under these part numbers: (For reference only)
- 3886152
- 686420316800
- CVC1023-OE