Grover #1600 Air Horn 
 
Grover Products Dual Connected Trucktone 160q
Length Short: 13 1/4", Length Long: 15 1/4"
Flare 4"
Chrome and Black finish
Volvo Part 8889203, Replaces Volvo: G15508493, G2076015, V1591866, V8889203, 02-7074793, 63001-0010
Pedestals sold separately: 1819
Weather shield pair sold separately: 1652