The photo would show you the shape of inner alternator shaft. If it is Torx shape (6-lobe, Star), then you need T50, or if it shows 12 splines (double Star), then, You need M10 XZN bit. 17 mm Hex with 33-tooth Spline PLUS T50 Torx (star), 75 mm long.
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This pulley is for 10mm width 2GT timing belt. This pulley is for 10mm width 2GT timing belt. This synchronous aluminum belt pulley is designed for 3D printer. It is an 3D printer accessory for 10mm wide belt.
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5M12-60T Pitch 5mm Tooth Width 16/21mm Timing Belt Pulley Synchronous Wheel Gear. -Tooth width: 16mm(for 15mm width belt),21mm(for 20mm width belt). -Tooth pitch accurate,Seamless matching synchronous belt.
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Belt Range: 14M. Manufactured from cast iron or steel, our pulley grooves are machine cut for accuracy and also statically or dynamically balanced (depending upon their size) to grade Q6.3 or better giving peripheral (rim) speeds of up to 40m/s.
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UK stock and UK delivery. The three piece tool is perfect for dismantling and assembling the freewheel pulley when changing the alternator or pulley. The socket has an M10 spline (12 point spline) bit on a 1/2” socket drive and the nut is equipped with the 33 teeth (regular sized version) eBay shipping option available for overseas buyers Not a genuine OE part but v good quality and price. Brand names in advert only used to help the search function
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Tooth width: 7/11/16mm(Suitable for 6/10/15mm timing belts). Pitch: 3 mm. Gear Teeth: 12T - 30T.
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(A2) The Browning 24XLB037 Timing Belt Pulley is a high-quality pulley designed for timing belt systems. With 24 teeth and a 0.25" bore size, this pulley is compatible with 0.375" timing belts. It has an outer diameter of 1.5 inches, making it suitable for various industrial applications. The Browning brand ensures reliability and durability, making this timing belt pulley a trusted component for businesses and machinery.
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This pulley is for 10mm width 2GT timing belt. This pulley is for 10mm width 2GT timing belt. This synchronous aluminum belt pulley is designed for 3D printer. It is an 3D printer accessory for 10mm wide belt.
eBay