2A – OEM type
OEM oil line connects oil tank to thermostat for 73-89 tanks. Can also be used with 65-71 oil tank by using our 26mm to 30mm adaptor. However, Cars 65-71 are recommended to use item 3C because they lack a wheel well channel to hold this line, tire clearance is thus limited.

2B – High Clearance ’73-’89 – Specialty Type
Specialty pipe interchanges with 3A and connects 73-89 oil tank to thermostat. Provides maximum clearance for fitting wide tires. Unlike the factory line that passes between the tire and the inner wheel well, this line arches above the tire to give superior tire clearance. The critical area between tank and tire is a purpose-formed hard line for maximum clearance.

2C – High Clearance ’65-’71 – Specialty Type
Specialty pipe interchanges with 3A and connects 65-71 oil tank (26mm fitting) to thermostat. Provides maximum clearance for fitting wide tires. Unlike the factory line that passes between the tire and the inner wheel well, this line arches above the tire to give superior tire clearance. The critical area between tank and tire is a purpose-formed hard line for maximum clearance. Cars 65-71 are higly recommended to use this line for improved tire clearance.

This part also goes by the following cross reference.
Cross Reference Part Number: