NOTE: If you do not see the belt you need, check here.

Applications:

• 667 - Gen 5 blower stock belt GTP/GS/SS supercharged with stock 3.8" pulley (67 1/4" -1708mm)
• 663 - Gen 3 blower stock belt GTP/GS/SS supercharged with stock 3.8" pulley (66 7/8")
• 660 - GTP/GS/SS supercharged with 3.3 - 3.7" pulley (66 3/4")
• 658 - GTP/GS/SS supercharged with 3.2 - 3.6" pulley (66 3/8" - 1687mm)
• 653 - GTP/GS/SS supercharged with 3.1 - 3.5" pulley (65 7/8")
• 650 - GTP/GS/SS supercharged with 2.8 - 3.1" pulley (65 1/2")
• 645 - GTP/GS/SS supercharged with 2.6 - 2.8" pulley
• 716 - Bonneville SSEi, Park Ave, or Riviera with a 3.4" pulley
• 721 - Bonneville SSEi, Park Ave, or Riviera with stock supercharger pulley (72 5/8" 1845mm)
• Riviera/Bonneville/Park Ave use same length belts

Stage 2 or 3 Intercooler

• 685 - 3.3"+
• 680 - 2.90" - 3.20"
• 675 - 2.6" - 2.8"

Short Stack intercooler

• 675 - 3.5" pulley
• 672 - 3.3"-3.4" pulley
• 670 - 3.2" pulley
• 667 - 3.0" pulley

Accessory belts

• 915 - Stock accessory belt for Series II '99-03 (works with either UD WP pulley or OD alt pulley but not both) (2340mm)
• 919 - 99-03 Accessory belt with WP UD pulley 92 3/8"
• 923 - Accessory belt for Series II '99-03 with UD WP pulley and alt UD pulley (2360mm)
• 905 - Stock accessory belt for 04+ Grand Prix/ 04+ Monte Carlo/ Impala
• 935 - Stock accessory belt for 97/98 -or- 04+ Monte with Alt relocation kit (94" - 2367mm) 
• 938 - Accessory belt for 97/98 with both underdrive pulleys (2400mm)

SS M90 supercharger kit for L36

• 970 - SS M90 for 97/98 
• 955 - SS M90 for 99+ 4.0"- 4.2" pulley
• 950 - SS M90 for 99+ 3.8"- 4.0" pulley
• 947 - SS M90 for 99+ 3.5"-3.8" pulley

Meziere electric water pump

• 875 - 99-03 accessory belt with Meziere electric water pump
• 864 - 04+ accessory belt with Meziere electric water pump
• 895 - 97/98 with Meziere electric water pump