SilenX IXN-40C 40mm Copper Blue LED Chipset Heatsink - Sleeved by SilenX
Side 40x40mm HS Cooling Fan+Heatsink Mount for 40mm O.D. Motor for R/C or RC - Team Integy
Enzotech SLF-40mm Low Profile Pure Copper Northbridge Cooler - AeroCooler
40mm Heatsink with Fan - Easycargo
UMS 40mm Heatsinks — diyAudio Store
40x40mm High Speed Cooling Fan+Heatsink Mount for 40mm O.D. Motor for R/C or RC - Team Integy
Amazon.com: DGZZI 40mm Heatsink Kit 2PCS 40 x 40x 20mm Aluminum Heat Sink Radiator Cooler Cooling Fin with Thermal Conductive Adhesive Tape for Cooling 3D Printers CPU Light-Emitting Diode Power Active Component :
2 Pcs 40mm Heatsink Kit 120mm X 40mm X 20mm, Cooler Aluminum Heatsink For Cooling Led Peltier Thermal Module - Fans & Cooling - AliExpress
1 Pcs 40mm X 10mm Cooling Fan Heatsink Diy Northbridge Cooler South North Bridge Radiator For Pc Computer - Fans & Cooling - AliExpress
40*180mm Primary Aluminum Water Cooling Block Heat Sink System For PC Laptop CPU - Walmart.com
40mm Heatsinks — diyAudio Store
40 mm x 40 mm Square 30 mm Tall Heatsink - Elliptical Pins