18 Speed Transmission Ratios2019-03-08T15:39:29+00:00

Eaton Fuller 18 Speed Transmission Ratios

Eaton Fuller 18 Speed Transmissions For Sale With Same Day Shipping Available Worldwide!

We not only stock Eaton Fuller 18 speed medium-duty manual and automatic transmissions in new and remanufactured options, we also sell genuine Eaton Fuller transmission parts including rebuild kits, gears, bearing kits, synchronizers, seal kits, bearings, countershafts, bell housings, input shafts and more. If you need your transmission rebuilt, we can help. We provide quality transmission rebuilding services and can pick up and deliver your transmission from anywhere in the world. Have questions? Need assistance? Give us a call, our experts are ready to help. Below you can find the ratios for your Eaton Fuller 18-speed transmission model along with transmission weights, length and PTO speed.

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Models in the 18-speed series have eighteen forward speeds and four reverse, consisting of a five-speed front section and a 4-speed auxiliary section. The  auxiliary section contains LO and HI range ratios, plus a splitter gear. The LO position in the front section is used only as a starting gear, it is never used when the  transmission is in HI range. The other four ratios are used once in LO range and once again in HI range. However, each of the five ratios (LO-1-2-3-4) in LO range  and each of the four ratios (5-6-7-8) in HI range can be split with the splitter gear.
After shifting out of the LO position, you use the easy Roadranger repeat “H” shift pattern. LO range and HI range are selected with the range lever. It is used once  during the upshift sequence and once during the downshift sequence. Always preselect the range shift. After preselection, the transmission automatically makes  the synchronizer range shift as the shift lever passes through neutral.

General Transmission Notes:

1. Length Listed lengths are installation dimensions from the face of clutch housing to front bottoming surface of companion flange or yoke, except AT-1202 and 2-A-92, which are from bottoming surface of input yoke to bottoming surface of output yoke.
2. Weight Listed weights are without clutch housing, controls and lubricant unless otherwise specified. All weights are approximate. Add 7 lbs. [3.15 kg] to models with an internal oil pump.

Eaton Fuller 18 Speed Transmission Gear Ratios

MODEL
18 SPEED
Lbs-Ft. Max TQ. Over
All
LL H % L % 1 % 2 % 3 % 4 % 5 % 6 % 7 % 8 Length Inches Weight Lbs. PTO
Speed
% Of
Engine
Reverse
RTO-15618 1550 17.39 12.45
14.71
3.29
3.89
H
L
Splitter
18%
O\D
DIR
12.45
14.71
44 8.62
10.20
39 6.21
7.34
40 4.45
5.26
39 3.20
3.78
40 2.28
2.70
39 1.64
1.94
40 1.18
1.39
39 .85
1.00
32.4 672 70
RTOF-15618 1550 17.39 12.45
14.71
3.29
3.89
H
L
Splitter
18%
O\D
DIR
12.45
14.71
44 8.62
10.20
39 6.21
7.34
40 4.45
5.26
39 3.20
3.78
40 2.28
2.70
39 1.64
1.94
40 1.18
1.39
39 .85
1.00
32.4 748 70
RTLO-14618A 1450 17.39 12.45
14.71
3.29
3.89
H
L
Splitter
18%
O\D
DIR
12.45
14.71
44 8.62
10.20
39 6.21
7.34
40 4.45
5.26
39 3.20
3.78
40 2.28
2.70
39 1.64
1.94
40 1.18
1.39
39 .85
1.00
32.4 662 70
RTLO-14718B 1450 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLO-14918A 1450 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLO-14918B 1450 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLO-16618A 1650 17.39 12.45
14.71
3.29
3.89
H
L
Splitter
18%
O\D
DIR
12.45
14.71
44 8.62
10.20
39 6.21
7.34
40 4.45
5.26
39 3.20
3.78
40 2.28
2.70
39 1.64
1.94
40 1.18
1.39
39 .85
1.00
32.4 672 70
RTLO-16718B 1650 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLO-16918B 1650 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLO-18718B 1850 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLO-18918B 1850 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLO-20918B 2050 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLO-22918B 2250 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLO-14718B-T2 1450 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLO-16718B-T2 1650 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLO-16918B-T2 1650 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLO-18718B-T2 1850 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLO-18918A-T2 1850 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLO-20918B-T2 2050 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLOF-14618A 1450 17.39 12.45
14.71
3.29
3.89
H
L
Splitter
18%
O\D
DIR
12.45
14.71
44 8.62
10.20
39 6.21
7.34
40 4.45
5.26
39 3.20
3.78
40 2.28
2.70
39 1.64
1.94
40 1.18
1.39
39 .85
1.00
32.4 662 70
RTLOF-14718B 1450 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLOF-14918B 1450 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLOF-16618A 1650 17.39 12.45
14.71
3.29
3.89
H
L
Splitter
18%
O\D
DIR
12.45
14.71
44 8.62
10.20
39 6.21
7.34
40 4.45
5.26
39 3.20
3.78
40 2.28
2.70
39 1.64
1.94
40 1.18
1.39
39 .85
1.00
32.4 672 70
RTLOF-16718B 1650 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLOF-16918B 1650 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLOF-18718B 1850 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
32.4 716 79
RTLOF-18918B 1850 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLOF-20918B 2050 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
RTLOF-22918B 2250 19.72 12.85
15.06
3.43
4.03
H
L
Splitter
17%
O\D
DIR
12.29
14.40
44 7.30
8.56
21 5.16
6.05
18 3.74
4.38
17 2.73
3.20
19 1.95
2.29
21 1.38
1.62
18 1.00
1.17
17 .73
.86
33.1 716 79
one year warranty

Transmissions new or rebuilt by Pro Gear and covered with a one year, unlimited mileage warranty.  *See warranty. All other warranties are that of the manufacturer.

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