Corvette Belt. A.I.R. Pump 427 with AC - Reproduction GM# 3861966: 1967

Authentic A.I.R. Pump Belt for the 1967 Corvette (427) with Factory A/C. This reproduction belt faithfully mirrors GM's original part GM# 3861966, ensuring authentic fitment for the airinjection system and air conditioning setup.

Designed for restorations that demand periodcorrect accuracy, this belt aligns with the 1967 Corvette's A.I.R. pump and AC pulley configuration, preserving correct routing and belt tension. The reproduction is grounded in the GM reference GM# 3861966, giving you a part that looks and functions like the original.

• GM reference alignment: GM# 3861966 reproduction mirrors the original length, groove profile, and installation geometry for the A.I.R. belt used on a 427powered, factory A/C Corvette.
• Authentic A.I.R. system compatibility: engineered to fit the airinjection pump and the A/C compressor pulley without modification.
• Ideal for showquality restorations: helps maintain authenticity for museums, concours cars, and collectorgrade builds.
• Ease of installation: designed for straightforward replacement by technicians familiar with 1960s GM belt routing.
• Durable construction: built to withstand the heat and vibration typical of a classic V8 with A/C.

This belt is the smart choice for enthusiasts restoring a Corvette where every detail mattersfrom the belt’s appearance to its precise fitment with the A.I.R. pump and AC system. Because it references GM# 3861966, you’re not guessing at compatibilityyou’re selecting a part that aligns with the original factory setup.

Note: See Note 29 GM# 3861966.

Who this is for

Perfect for automotive restorers, classic Corvette enthusiasts, and collectors aiming for concourslevel accuracy in a 1967 Corvette with a 427 engine and factory air conditioning.

Practical guidance for best results

• Follow the factory routing path for the A.I.R. pump and AC belt to ensure proper pulley alignment.
• Set belt tension according to service manuals for 1967 GM V8 setups; avoid overtightening to prevent premature wear.
• Inspect pulleys and the A.I.R. pump during installation to confirm there’s no glazing or debris that could cause belt misalignment.