BlogHondaRepair Guide
Honda Engines Specs and Codes
This is a comprehensive compiled guide of Honda engines deployed around the world. This list will be updated on a regular basis and is a continuous work in progress.
Honda uses standard engine naming conventions.
| GX | Engine series V – vertical shaft (GCV, GXV) |
| 160 | Engine size Displacement (cc) |
| T1 | Manufacturing location and model version |
| QXC | Engine type code This identifies the exact variant of the engine |
The engine serial number is stamped on the side of the engine block. All Honda engine serial numbers have a 4 or 5-letter prefix followed by a 7-digit number.
The engine serial number is stamped on the side of the engine. All Honda engine serial numbers have a 4 or 5-letter prefix followed by a 7-digit number.
| Engine | Displacement | Bore & Stroke | Power output (max.) | Net Torque | ||
| G SERIES | ||||||
| G20 | 135 cc (8.05 cu.in.) | – | 3.0 PS | – | ||
| G25 | 59 cc (3.6 cu.in.) | 46 x 35.6 mm (1.81 x 1.40 in.) | 2.5 HP at 6,000 rpm | – | ||
| G28 | 67 cc (4.09 cu.in.) | 49 x 35.5 mm (1.93 x 1.40 in.) | 2.8 HP at 6,000 rpm | – | ||
| G30 | 135 cc (8.05 cu.in.) | – | 4.0 PS | – | ||
| G35 | 144 cc (8.79 cu.in.) | 64 x 45 mm (2.52 x 1.77 in.) | 3.5 HP at 4,000 rpm | 6.5 Nm at 3,000 rpm | ||
| G41 | 170 cc (10.37 cu.in.) | 66 x 50 mm (2.59 x 1.97 in.) | 4.5 PS at 4,000 rpm | – | ||
| G42 | 171 cc (10.4 cu.in.) | 66 x 50 mm (2.59 x 1.97 in.) | 4.5 HP at 4,000 rpm | 8.4 Nm at 3,600 rpm | ||
| G45 | 240 cc (16.6 cu.in.) | 72 x 59 mm (2.83 x 3.32 in.) | 6.0 PS at 4,000 rpm | – | ||
| G50 | 187 cc (11.4 cu.in.) | 69 x 50 mm (2.7 x 2.0 in.) | 5.0 HP at 4,000 rpm | 9.0 Nm at 3,600 rpm | ||
| G65 | 240 cc (14.6 cu.in.) | 72 x 59 mm (2.8 x 2.3 in.) | 6.9 HP at 4,000 rpm | 12.0 Nm at 3,600 rpm | ||
| G80 | 296 cc (18.0 cu.in.) | 80 x 59 mm (3.2 x 2.3 in.) | 8.0 HP at 4,000 rpm | 15.7 Nm at 2,500 rpm | ||
| G100 | 76 cc (4.6 cu.in.) | 46 x 46 mm (1.81 x 1.81 in.) | 2.0 HP at 4,200 rpm | 3.5 Nm at 3,000 rpm | ||
| G100 K1 | 83 cc (5.06 cu.in.) | 48 x 46 mm (1.88 x 1.81 in.) | 2.2 HP at 4,200 rpm | 3.8 Nm at 3,000 rpm | ||
| G100 K2 | 98 cc (6.0 cu.in.) | 52 x 46 mm (2.05 x 1.81 in.) | 2.5 HP at 4,200 rpm | 4.5 Nm at 3,000 rpm | ||
| G150 | 144 cc (8.8 cu.in.) | 64 x 45 mm (2.52 x 1.77 in.) | 3.8 HP at 3,600 rpm | 7.4 Nm at 3,000 rpm | ||
| G200 | 197 cc (12.0 cu.in.) | 64 x 56 mm (2.52 x 2.20 in.) | 5.5 HP at 3,600 rpm | 10.8 Nm at 2,500 rpm | ||
| G300 | 272 cc (16.1 cu.in.) | 76 x 60 mm (3.00 x 2.40 in.) | 7 HP at 3,600 rpm | 14.7 Nm at 3600 rpm | ||
| G400 | 406 cc (24.8 cu.in.) | 86 x 70 mm (3.40 x 2.80 in.) | 10 HP at 3,600 rpm | 22.5 Nm at 3600 rpm | ||
| GC SERIES | ||||||
| GC135 | 135 cc (8.2 cu.in.) | 64 x 42 mm (2.5 x 1.7 in.) | 4.0 HP at 3,600 rpm | 8.6 Nm at 2,500 rpm | ||
| GC160 | 160 cc (9.8 cu.in.) | 64 x 50 mm (2.5 x 1.97 in.) | 5.0 HP at 3,600 rpm | 10.3 Nm at 2,500 rpm | ||
| GC190 | 187 cc (11.4 cu.in.) | 69 x 50 mm (2.71 x 1.97 in.) | 6.0 HP at 3,600 rpm | 12.1 Nm at 2,500 rpm | ||
| GCV SERIES | ||||||
| GCV135 | 135 cc (8.2 cu.in.) | 64 x 42 mm (2.5 x 1.7 in.) | 4.5 HP at 3,600 rpm | 9.7 Nm at 2,500 rpm | ||
| GCV160 | 160 cc (9.8 cu.in.) | 64 x 50 mm (2.5 x 1.97 in.) | 5.5 HP at 3,600 rpm | 11.4 Nm at 2,500 rpm | ||
| GCV190 | 187 cc (11.4 cu.in.) | 69 x 50 mm (2.71 x 1.97 in.) | 5.1 HP at 3,600 rpm | 11.3 Nm at 2,500 rpm | ||
| GCV520 | 530 cc (32.3 cu.in.) | 77 x 57 mm (3.0 x 2.2 in.) | 14.0 HP at 3,600 rpm | 35.9 Nm at 2,500 rpm | ||
| GCV530 | 530 cc (32.3 cu.in.) | 77 x 57 mm (3.0 x 2.2 in.) | 16.0 HP at 3,600 rpm | 36.5 Nm at 2,500 rpm | ||
| GD SERIES | ||||||
| GD90 | – | – | 9.0 PS | – | ||
| GD100 | – | – | 10.0 PS | – | ||
| GD320 | 317 cc (19.3 cu.in.) | 76 x 70 mm (2.99 x 2.76 in.) | 7.0 HP at 3,600 rpm | 15.7 Nm at 3,600 rpm | ||
| GD321 | 317 cc (19.3 cu.in.) | 76 x 70 mm (2.99 x 2.76 in.) | 7.0 HP at 3,600 rpm | 15.7 Nm at 3,600 rpm | ||
| GD410 | 411 cc (25.2 cu.in.) | 82 x 78 mm (3.23 x 3.07 in.) | 9.0 HP at 3,600 rpm | 20.6 Nm at 3,600 rpm | ||
| GD411 | 411 cc (25.2 cu.in.) | 82 x 78 mm (3.23 x 3.07 in.) | 9.0 HP at 3,600 rpm | 20.6 Nm at 3,600 rpm | ||
| GD1100 | 1061 cc (65.0 cu.in.) | 76 x 78 mm (2.99 x 3.07 in.) | SH1:18 HP at 2,600 rpm SH2:20 HP at 3,000 rpm SH3:22 HP at 3,600 rpm | SH1:58.8 Nm at 2,600 rpm SH2:55.9 Nm at 2,000 rpm SH3:52 Nm at 2,200 rpm | ||
| GD1250 | 1235 cc (75.6 cu.in.) | 82 x 78 mm (3.23 x 3.07 in.) | SH1:20 HP at 2,600 rpm SH2:22 HP at 3,000 rpm SH3:24 HP at 3,600 rpm | SH1:64.7 Nm at 1,600 rpm SH2:61.8 Nm at 2,000 rpm SH3:55.9 Nm at 2,200 rpm | ||
| GE SERIES | ||||||
| GE35 | 34.4 cc (2.11 cu.in.) | 37 x 32 mm (1.5 x 1.3 in.) | 0.91 HP at 4,500 rpm | 1.47 Nm at 3,500 rpm | ||
| GP SERIES | ||||||
| GP160H | 163 cc (9.9 cu.in.) | 68 x 45 mm (2.68 x 1.77 in.) | 4.8 HP at 3,600 rpm | 10.3 Nm at 2,500 rpm | ||
| GP200H | 196 cc (12.0 cu.in.) | 68 x 54 mm (2.68 x 2.13 in.) | 5.5 HP at 3,600 rpm | 12.4 Nm at 2,500 rpm | ||
| GS SERIES | ||||||
| GS65 | 240 cc (14.6 cu.in.) | 72 X 59 mm (2.8 x 2.3 in) | 6.8 PS at 4,000 rpm | 12.0 Nm at 3,000 rpm | ||
| GS160 | 160 cc (9.8 cu.in.) | 64 x 50 mm (2.5 x 2.0 in.) | 5.0 HP at 3,600 rpm | 10.3 Nm at 2,500 rpm | ||
| GS190A | 187 cc (11.4 cu.in.) | 69 x 50 mm (2.7 x 2.0 in.) | 6.0 HP at 3,600 rpm | 12.1 Nm at 2,500 rpm | ||
| GS190 | 187 cc (11.4 cu.in.) | 69 x 50 mm (2.7 x 2.0 in.) | 5.2 HP at 3,600 rpm | 11.3 Nm at 2,500 rpm | ||
| GSV SERIES | ||||||
| GSV190 | 187 cc (11.4 cu.in.) | 69 x 50 mm (2.7 x 2.0 in.) | 6.5 HP at 3,600 rpm | 13.2 Nm at 2,500 rpm | ||
| GT SERIES | ||||||
| GT50 | – | – | 4.0 PS | – | ||
| GT65 | – | – | 5.0 PS | – | ||
| GV SERIES | ||||||
| GV35 | 144 cc (8.8 cu.in.) | 64 x 45 mm (2.5 x 1.8 in.) | 3.5 HP at 4,000 rpm | 6.6 Nm at 3,000 rpm | ||
| GV100 | 97 cc (5.9 cu.in.) | 52 x 46 mm (2.04 x 1.81 in.) | 2.6 HP at 4,200 rpm | 4.3 Nm at 3,000 rpm | ||
| GV150 | 144 cc (8.8 cu.in.) | 64 x 45 mm (2.5 x 1.8 in.) | 3.5 HP at 3,600 rpm | 6.9 Nm at 3,000 rpm | ||
| GV200 | 197 cc (12.0 cu.in.) | 67 x 56 mm (2.64 x 2.20 in.) | 5.0 HP at 3,600 rpm | 10.3 Nm at 3,000 rpm | ||
| GV400 | 406 cc (28.1 cu.in.) | 86 x 70 mm (3.40 x 2.80 in.) | 11.0 HP at 3,600 rpm | 24.5 Nm at 3,000 rpm | ||
| GX SERIES | ||||||
| GX22 | 22 cc (1.3 cu.in.) | 33 x 26 mm (1.3 x 1.0 in.) | 1.0 HP at 7,000 rpm | 1.09 Nm at 4,500 rpm | ||
| GX25 | 25 cc (1.5 cu.in.) | 35 x 26 mm (1.4 x 1.0 in.) | 1.08 HP at 7,000 rpm | 1.25 Nm at 5,000 rpm | ||
| GX31 | 31 cc (1.3 cu.in.) | 39 x 26 mm (1.5 x 1.0 in.) | 1.5 HP at 7,000 rpm | 1.64 Nm at 4,500 rpm | ||
| GX35 | 35.8 cc (2.18 cu.in.) | 39 x 30 mm (1.5 x 1.2 in.) | 1.6 PS at 7,000 rpm | 1.9 Nm at 5,500 rpm | ||
| GX100 | 98 cc (6.0 cu.in.) | 56 x 40 mm (2.2 x 1.6 in.) | 3.0 PS at 3,600 rpm | 5.7 Nm at 3,600 rpm | ||
| GX110 | 107 cc (6.5 cu.in.) | 57 x 42 mm (2.24 x 1.6 in.) | 3.5 PS at 4,000 rpm | 6.7 Nm at 3,600 rpm | ||
| GX120 T1 | 118 cc (7.2 cu.in.) | 60 x 42 mm (2.4 x 1.65 in.) | 4.0 HP at 4,000 rpm | 7.5 Nm at 2,500 rpm | ||
| GX120 UT2/T2 | 118 cc (7.2 cu.in.) | 60 x 42 mm (2.4 x 1.65 in.) | 3.5 HP at 3,600 rpm | 7.3 Nm at 2,500 rpm | ||
| GX140 | 144 cc (8.78 cu.in.) | 64 x 45 mm (2.5 x 1.77 in.) | 5.0 PS at 4,000 rpm | 9.8 Nm at 3,600 rpm | ||
| GX160 T1 | 163 cc (9.9 cu.in.) | 68 x 45 mm (2.68 x 1.77 in.) | 5.5 HP at 4,000 rpm | 11 Nm at 2,500 rpm | ||
| GX160 UT2/T2 | 163 cc (9.9 cu.in.) | 68 x 45 mm (2.68 x 1.77 in.) | 4.9 HP at 3,600 rpm | 10.3 Nm at 2,500 rpm | ||
| GX200 T | 196 cc (12.0 cu.in.) | 68 x 54 mm (2.68 x 2.13 in.) | 6.5 HP at 3,600 rpm | 13.2 Nm at 2,500 rpm | ||
| GX200 UT2/T2 | 196 cc (12.0 cu.in.) | 68 x 54 mm (2.68 x 2.13 in.) | 5.6 HP at 3,600 rpm | 12.4 Nm at 2,500 rpm | ||
| GX240 K1/T1/UT1 | 242 cc (14.8 cu.in.) | 73 x 58 mm (2.9 x 2.3 in.) | 8.0 HP at 3,600 rpm | 17.0 Nm at 2,500 rpm | ||
| GX240 R2/RT2/T2/U2/UT2 | 270 cc (16.5 cu.in.) | 77 x 58 mm (3.0 x 2.3 in.) | 7.9 HP at 3,600 rpm | 18.3 Nm at 2,500 rpm | ||
| GX270 K1/T1/UT1 | 270 cc (16.5 cu.in.) | 77 x 58 mm (3.0 x 2.3 in.) | 9.0 HP at 3,600 rpm | 19.5 Nm at 2,500 rpm | ||
| GX270 T2/UT2 | 270 cc (16.5 cu.in.) | 77 x 58 mm (3.0 x 2.3 in.) | 8.4 HP at 3,600 rpm | 19.1 Nm at 2,500 rpm | ||
| GX340 K1 | 337 cc (20.6 cu.in.) | 82 x 64 mm (3.2 x 2.5 in.) | 11.0 HP at 3,600 rpm | 24 Nm at 2,500 rpm | ||
| GX340 R2/RT2/T2/U2/UT2 | 389 cc (23.7 cu.in.) | 88 x 64 mm (3.5 x 2.5 in.) | 10.7 HP at 3,600 rpm | 26.4 Nm at 2,500 rpm | ||
| GX360 K1 | 359 cc (21.9 cu.in.) | 58 x 68 mm (2.3 x 2.7 in.) | 13.0 HP at 3,600 rpm | 25.7 Nm at 3,000 rpm | ||
| GX390 K1 | 389 cc (23.7 cu.in.) | 88 x 64 mm (3.5 x 2.5 in.) | 13.0 HP at 3,600 rpm | 27 Nm at 2,500 rpm | ||
| GX390 RT2/T2/UT2 | 389 cc (23.7 cu.in.) | 88 x 64 mm (3.5 x 2.5 in.) | 11.7 HP at 3,600 rpm | 26.5 Nm at 2,500 rpm | ||
| GX610 K1 | 614 cc (37.5 cu.in.) | 77 x 66 mm (3.03 x 2.6 in.) | 18 HP at 3,600 rpm | 43.1 Nm at 2,500 rpm | ||
| GX610 U1/R1 | 614 cc (37.5 cu.in.) | 77 x 66 mm (3.03 x 2.6 in.) | 16.6 HP at 3,600 rpm | 39.6 Nm at 2,500 rpm | ||
| GX620 K1 | 614 cc (37.5 cu.in.) | 77 x 66 mm (3.03 x 2.6 in.) | 20 HP at 3,600 rpm | 44.1 Nm at 2,500 rpm | ||
| GX620 U1/R1 | 614 cc (37.5 cu.in.) | 77 x 66 mm (3.03 x 2.6 in.) | 18.1 HP at 3,600 rpm | 40.6 Nm at 2,500 rpm | ||
| GX630 | 688 cc (41.97 cu.in.) | 78 x 72 mm (3.07 x 2.83 in.) | 20.8 HP at 3,600 rpm | 48.3 Nm at 2,500 rpm | ||
| GX640 | 635 cc (38.7 cu.in.) | 76 x 70 mm (3.0 x 2.8 in.) | 19.7 HP at 3,600 rpm | 46.1 Nm at 2,500 rpm | ||
| GX660 | 688 cc (41.97 cu.in.) | 78 x 72 mm (3.07 x 2.83 in.) | 21.5 HP at 3,600 rpm | 48.3 Nm at 2,500 rpm | ||
| GX670 | 670 cc (40.9 cu.in.) | 77 x 72 mm (3.03 x 2.83 in.) | 24.0 HP at 3,600 rpm | 50.8 Nm at 2,500 rpm | ||
| GX670 U/R | 670 cc (40.9 cu.in.) | 77 x 72 mm (3.03 x 2.83 in.) | 20.5 HP at 3,600 rpm | 46.0 Nm at 2,500 rpm | ||
| GX690 | 688 cc (41.97 cu.in.) | 78 x 72 mm (3.07 x 2.83 in.) | 22.1 HP at 3,600 rpm | 48.3 Nm at 2,500 rpm | ||
| GXH SERIES | ||||||
| GXH50 | 49 cc (2.99 cu.in.) | 42 x 36 mm (1.65 x 1.42 in.) | 2.4 HP at 7,000 rpm | 3.04 Nm at 4,500 rpm | ||
| GXR SERIES | ||||||
| GXR120 T/RT | 121 cc (7.4 cu.in.) | 60 x 43 mm (2.36 x 1.69 in.) | 3.6 HP at 3,600 rpm | 7.5 Nm at 2,500 rpm | ||
| GXV SERIES | ||||||
| GXV50 | 49 cc (2.99 cu.in.) | 42 x 36 mm (1.65 x 1.42 in.) | 2.5 HP at 7,000 rpm | 3.04 Nm at 2,500 rpm | ||
| GXV57 | 57 cc (3.50 cu.in.) | 45 x 36 mm (1.77 x 1.42 in.) | 2.0 HP at 4,800 rpm | 3.2 Nm at 4,500 rpm | ||
| GXV120 | 118 cc (7.2 cu.in.) | 60 x 42 mm (2.4 x 1.7 in.) | 4.0 HP at 3,600 rpm | 8.0 Nm at 2,700 rpm | ||
| GXV140 | 135 cc (8.2 cu.in.) | 68 x 45 mm (2.7 x 1.8 in.) | 5.0 HP at 3,600 rpm | 10.3 Nm at 2,700 rpm | ||
| GXV160 | 163 cc (10.0 cu.in.) | 68 x 45 mm (2.7 x 1.8 in.) | 5.5 HP at 3,600 rpm | 10.8 Nm at 2,500 rpm | ||
| GXV270 | 270 cc (16.5 cu.in.) | 77 x 58 mm (3.0 x 2.3 in.) | 8.5 HP at 3,600 rpm | 18 Nm at 2,500 rpm | ||
| GXV340 | 337 cc (20.6 cu.in.) | 82 x 64 mm (3.23 x 2.52 in.) | 11 HP at 3,600 rpm | 23 Nm at 2,500 rpm | ||
| GXV390 | 389 cc (23.7 cu.in.) | 88 x 64 mm (3.46 x 2.52 in.) | 13 HP at 3,600 rpm | 28 Nm at 2,500 rpm | ||
| GXV520 | 530 cc (32.3 cu.in.) | 77 x 57 mm (3.0 x 2.2 in.) | 14.0 HP at 3,600 rpm | 35.9 Nm at 2,500 rpm | ||
| GXV530 | 530 cc (32.3 cu.in.) | 77 x 57 mm (3.0 x 2.2 in.) | 16.0 HP at 3,600 rpm | 36.5 Nm at 2,500 rpm | ||
| GXV610 K1 | 514 cc (37.5 cu.in.) | 77 x 66 mm (3.0 x 2.6 in.) | 18.0 HP at 3,600 rpm | 43.1 Nm at 2,500 rpm | ||
| GXV620 K1 | 514 cc (37.5 cu.in.) | 77 x 66 mm (3.0 x 2.6 in.) | 20.0 HP at 3,600 rpm | 44.1 Nm at 2,500 rpm | ||
| GXV630 R | 688 cc (41.97 cu.in.) | 78 x 72 mm (3.07 x 2.83 in.) | 20.8 HP at 3,600 rpm | 48.3 Nm at 2,500 rpm | ||
| GXV660 R | 688 cc (41.97 cu.in.) | 78 x 72 mm (3.07 x 2.83 in.) | 21.5 HP at 3,600 rpm | 48.3 Nm at 2,500 rpm | ||
| GXV670 | 670 cc (40.9 cu.in.) | 77 x 72 mm (3.03 x 2.83 in.) | 22.8 HP at 3,600 rpm | 44.4 Nm at 2,500 rpm | ||
| GXV690 R | 688 cc (41.97 cu.in.) | 78 x 72 mm (3.07 x 2.83 in.) | 22.1 HP at 3,600 rpm | 48.3 Nm at 2,500 rpm | ||
| iGX SERIES | ||||||
| iGX240 | 270 cc (16.5 cu.in.) | 77 x 58 mm (3.0 x 2.3 in.) | 7.9 HP at 3,600 rpm | 18.3 Nm at 3,600 rpm | ||
| iGX270 | 270 cc (16.5 cu.in.) | 77 x 58 mm (3.0 x 2.3 in.) | 8.4 HP at 3,600 rpm | 19.1 Nm at 3,600 rpm | ||
| iGX340 | 289 cc (23.7 cu.in.) | 88 x 64 mm (3.46 x 2.52 in.) | 10.7 HP at 3,600 rpm | 26.4 Nm at 3,600 rpm | ||
| iGX390 | 289 cc (23.7 cu.in.) | 88 x 64 mm (3.46 x 2.52 in.) | 11.7 HP at 3,600 rpm | 26.5 Nm at 3,600 rpm | ||
| iGX440 | 438 cc (26.7 cu.in.) | 88 x 72.1 mm (3.46 x 2.84 in.) | 12.7 HP at 3,600 rpm | 29.8 Nm at 2,500 rpm | ||
| T SERIES | ||||||
| T | – | – | 2.5 PS | – | ||
| VN SERIES | ||||||
| VN | – | – | 4 PS | – | ||
| VNC | – | – | 5 PS | – | ||
| VND | – | – | 5 PS | – | ||
