Part #: 650-123
New complete inner and outer valve spring set. These springs will fit Datsun 240Z, 260Z, 280Z and 280ZX, 1970-1983. High quality Made in USA valve springs. Replaces all inner and outer springs on your 6-cylinder L series engine.
Dual Spring Specs:
# @ 40mm installed height: 80#
# @ 30mm height: 160#
Coil bind at 25.9mm height (.555" lift from installed height to bind)