Trans/Air Manufacturing Parts Catalog

06-08-2026 - Please check our website for the most current information.
www.transairmfg.com/bus-air-conditioning-parts-catalog.cfm

Pulley's & Idler's

Idler Arm


Idler Arm
4012233 -Idler, Standoff, 1.70" Tall, M10-1.5
4012271 -Idler, Standoff, 1.00" x 0.559"
4012268 -Idler, Standoff, 1.25" x 2.19" Tall, 0.44 Thru
4012267 -Idler, Standoff, 1.25" x 2.38"
401874 -Arm, Idler, 2.75" Throw x 1.1875 Non-threaded Adjusting Hole
711015 -Arm, Idler, 2.75" Throw x 1.1875 Threaded Adjusting Hole
711028 -Arm, Idler, 1.25" Throw x .75" High
711003 -Arm, Idler, 1.25" Throw x 1.125" High
711013 -Arm, Idler, 1.25" Throw x 1.25" High
711012 -Arm, Idler, 1.25" Throw x 1.375" High
711020 -Arm, Idler, 1.25" Throw x 1.50" High
711030 -Arm, Idler, 1.25" Throw x 1.62" High
711031 -Arm, Idler, 1.25" Throw x 1.75" High
711018 -Arm, Idler, 1.25" Throw x 1.875" High
711004 -Arm, Idler, 1.25" Throw x 2" High
711010 -Arm, Idler, 1.25" Throw x 2.125" High

Idler's


Idler's
711021 -Idler, Helical Spring, CCW Rotation
4012478 -Pulley, Backside Idler, 2.40" OD X 0.67" ID X 1.55" W, Dual Bearing
711040 -Pulley, Backside Idler, 2.91" OD X 0.67" ID X 1.82" W
711041 -Pulley, Backside Idler, 2.99" OD X 0.67" ID X 1.21" W
711047 -Pulley, Backside Idler, 2.99" OD X 0.67" ID X 1.45" W
711037 -Pulley, Backside Idler, 3.40" OD X 0.67" ID X 1.55" W
711034 -Pulley, Backside Idler, 3.50" OD X 0.67" ID X 1.47" W
711045 -Pulley, Backside Idler, 3.54" OD X 0.67" ID X 1.18" W
711056 -Pulley, Backside Idler, 3.54" OD X 0.67" ID X 1.18" W
4012480 -Pulley, Backside Idler, 3.90" OD X 0.67" ID X 1.55" W
711023 -Pulley, Backside Idler, 40.1mm Wide, .665 ID
711007 -Pulley, Backside Idler, Flanged, 3.63" OD X 0.67" ID X .50" W
711066 -Pulley, Backside, 100MM x 28MM Wide, Single Bearing, Bearing ID 17MM, Steel
711063 -Pulley, Backside, 70MM x 27MM Wide, 17MM Bearing ID
711071 -Pulley, Backside, 74MM x 42.6MM Wide, Double Bearing
711076 -Pulley, Backside, 76MM x 30.9MM Wide
711055 -Pulley, Backside, 90mm x 37mm Wide, 17mm Bearing ID
711001 -Idler Kit, 3.64" Dual 1/2" Grv Blk Pulley
711005 -Idler Kit, Cast Iron Pulley, 1 Grv (1/2" -3.64 OD), w/ Shoulder Bolt and Spacer
711029 -Pulley, Idler, 4.00" Dia, Single 1/2" Grv, w/Bolt, Bushing Spacer
711032 -Pulley, Idler, 2 'B' Groove, 4.50" Dia
711024 -Pulley, Idler, 2 Grv, 0.363
711042 -Idler, Helical Spring, CAT 3126, w/Backside Pulley
711043 -Idler, Helical Spring, CCW Rotation, 235 In-Lb
711048 -Idler Pulley, 6K-Grv, 76MM Pitch
711044 -Idler Pulley, 8K-Grv, 76MM (2.99") Pitch
711046 -Idler, Helical Spring Tensioner
711049 -Idler, Helical Spring, CCW Rotation, 202 In-Lb
711050 -Idler, Helical Spring, CCW, 185 In-Lb
711053 -Idler, Helical Spring, CCW, 235 In-Lb
711054 -Idler, Helical Spring, CCW Rotation, 214 In-lb
711062 -Idler, Helical Spring, CCW, Backside, 137 In Lbs
711067 -Pulley, 8K Groove, Dia. 90MM, Single Bearing, Bearing ID 17MM, Steel
711070 -Tensioner, CW, 85 LB

Pulley's


Pulley's
4011364 -Pulley, 2 Grv, "V", 5/8", 8.00 Dia, 116 Thomas
4011563 -Pulley, Alternator, .670 Dia Bore, 8K Grv, 2.300 Dia Effective, .75 Back Space
4011657 -Pulley, 2 Grv (.50), 5.9L Crank, Add-On, 8.50" Dia
4012140 -Pulley, 6 Groove, 6.4L M-B
4012333 -Pulley, Alt, 6 Grv, 3.53
4012563 -Pulley, Alt, 6K-Grv, 2.89 Pitch
4012744 -Pulley, 6 Groove, Maxxforce 7
4012812 -Pulley, 8 Groove, Maxxforce DT Crank
513145 -Pulley, Alternator, 2 'A' Grv, 3.12 Dia
513153 -Pulley, Alternator, 4.30 Pitch, 2 'A' Grv
513163 -Pulley, Alternator, 3.50 OD, 2 'A' Grv
Clamps Worm Gear
513L74290 -Pulley, 1/2"Grv, .875 Bore x 3.25 OD
513L74999 -Pulley, Alt, Dual 1/2" Grv
513L75880 -Pulley, Alt, Dual 1/2" Grv
513L76699 -Pulley, Dual 1/2"Grv, .875 Bore x 3.12 OD

Shoulder Bolts


Shoulder Bolts
711008 -Bolt, Shoulder, #120 for Single Pulley
711019 -Bolt, Shoulder, For 2-Grv Dual Pulley
711035 -Bolt w/Washer, Hex Hd, 8MM x 1.25 x 1.41, Bolt has Washer Attached (One Piece)
711038 -Bolt, Shoulder, For Backside Idler, 10MM Thread