Water Pump Replacement for Volvo Penta 1995-1999 3857794 3851982 3855079 with 4.5" Pulley 36923242Product Type: Water Pump OEM Number: 3857794, 3852399, 3855079, 3851982 Application: Replacement for many Volvo Penta HU thru WT model engines from 1995 1999 Replacement for 3. 0GS MD, HU, 3. 0 GS NC, LK, BY, WTR, 4. 3GL & 4. 3GS LK, BY, 5. 0GL BY, 5. 7GI NC, LK, 5. 7GLI LK, 5. 7GS LK, 5. 7GS BY, 5. 7GSI LK, 5. 7GSI BY model engines. It's used on engines ranging from 3. 0L to 8. 2L. Specification: impeller used 21951346 with 4 1 2 in. diameter single