1Wide Compatibility: This large distributor cap rotor kit is replacement for K549 SBC 283, 305, 307, 327, 350, 400, BBC 454, 396, 427, making it versatile for a broad range of vehicles. 2Premium Material: The distributor cap rotor kits are made of premium ABS plastic materials for optimal durability, ensuring a long lasting performance. 3Optimal Performance: The distributor kit is designed to provide optimal electrical conductivity, promoting efficient energy transfer and enhancing overall vehicle performance. 4Effective Tune up: This kit offers an effective, reliable solution for regular vehicle tune ups, maintaining engine efficiency and extending the lifespan of your vehicle. 5Easy Installation: The distributor cap rotor replacement kits are engineered for easy installation, ideal replacement for the original parts, making it convenient for users. Item Type: Distributor Cap Rotor Replacement KitsMaterial: ABS Fitment: Fits for MSD, for Pro Comp, for WYSCO, for RPC, for TSP, for Pertronix Fits for HEI Aftermarket Distributors Fits for Olds High Energy Ignition (Hei) Distributors Fits for V8 265 283 307 327 350 383 396 400 402 427 454 472 502 Engines Fits for V8 Engines Fits for 260 289 302 347 351W 351C 351M 400M 429 460 352 360 390 400 351 406 427 428 V8 engines Fits for 273 318 340 360 383 400 413 426 440 V8 Engines These are performance replacement for HEI distributor caps featuring brass terminals Comes with performance for hei distributor cap and rotor 1 xLargeDistributorCapRotorKit (12 Accessory)