2 x 582 W21W Capless Reverse Reversing Light Bulb 382W 12v 21w Push Fit
582 (382W) W21W 12v 21w Bulb. Part No: 582 (Also Known as 382W). Base: W3x16D 20mm Capless - Push Fit. Watts: 21w. To Fit: Reverse Light Bulb. listed you can compare your existing bulb to the one in the picture.