This listing is for a brand new harmonic balancer bolt and washer kit from Pioneer that is made in the USA.

It fits small block Chevy 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400 V8 engines with steel crank pulley. May not be long enough for use with aluminum pulleys.

Please check your old parts to ensure the correct fit, refer to the manufacturers catalog or contact me with any application questions.

• Brand: Pioneer
• Part Number: 859012
• Head Style: Hex Head
• Socket Size: 5/8"
• Bolt Thread Size: 7/16" - 20
• Under Head Length: 2.225"
• Material: Hi-Tensile Steel

Pioneer Harmonic Balancer Bolt Kits features a hi-tensile strength hex-head bolt, an extra large 5/16" thick, wide area washer for more uniform torque and a hi-tensile lock washer. All are coated with a yellow dichromate finish.