The John Deere 4045 engine is the four-cylinder, 4.5-litre member of Deere’s PowerTech diesel family: in Deere’s engine codes, 4 is the cylinder count and 045 the displacement. It powers 5E, 5M, 6E, 6M and 6R utility tractors, older 6D tractors, and other makers’ machines that buy Deere industrial engines. Below: specs by variant, machines, oil and service intervals, Nebraska-measured fuel use, and what a calibration can and cannot do.
John Deere 4045 engine specs
| Specification | John Deere 4045 (PowerTech 4.5 L) |
|---|---|
| Displacement | 275 cu in (4.5 L) on Deere engine sheets and some tractor pages; other Deere tractor pages and Nebraska reports list 276 cu in (4,525 cc). |
| Cylinders | 4, in-line, four-stroke, wet cylinder sleeves |
| Bore × stroke | 4.17 × 5.00 in (106 × 127 mm) on Deere sheets; Nebraska reports list 4.19 × 5.00 in (106.5 × 127.0 mm) |
| Aspiration | Naturally aspirated (4045D), turbocharged (4045T) or turbocharged and air-to-air aftercooled (4045H); fixed, wastegate, variable-geometry or twin series turbos by variant |
| Power range | Industrial: 74–173 hp (55–129 kW) by variant and tier. Generator: up to 197 hp (147 kW) standby. Tractors below: 90 hp (5090E) to 130 hp (5130M), 140 hp on a 6M 120 with Intelligent Power Management. |
| Engine oil capacity | 3.2–4.5 US gal (12–17 L) with filter, depending on the machine and oil pan; Deere’s engine sheets give no single figure |
| Fuel system | Mechanical pump on PowerTech M (including non-certified engines); earlier electronic engines used Delphi DP201, Bosch VP44 or Stanadyne DE10 pumps; high-pressure common rail on PowerTech E, Plus and all later versions |
| Valves | 2 per cylinder (PowerTech M and E, EWL, EWX, EWS) or 4 (PowerTech Plus, PWL, PSL, PWS, PSS) |
Variants and emissions tiers
Deere names the 4.5 L by platform and emissions level. Ratings below are industrial figures from Deere’s industrial engine selection guide; tractor versions carry their own codes and ratings.
| Deere name | Example models | Emissions level | Valves and turbo | Fuel system | Industrial rated power |
|---|---|---|---|---|---|
| PowerTech M | 4045DF270, 4045TF150, 4045TF250, 4045HF150 | Not emissions certified | 2-valve; naturally aspirated or fixed turbo | Mechanical | 74–140 hp (55–104 kW) |
| PowerTech M | 4045TF280, 4045HF280 | Tier 3 / Stage IIIA | 2-valve, fixed turbo | Mechanical rotary pump | 75–99 hp (56–74 kW) |
| PowerTech E | 4045TF285, 4045HF285 | Tier 3 / Stage IIIA | 2-valve, fixed turbo | Common rail | 85–140 hp (63–104 kW) |
| PowerTech Plus | 4045HF485 | Tier 3 / Stage IIIA | 4-valve, variable-geometry turbo | Common rail | 149–173 hp (111–129 kW) |
| EWL | 4045HI440 | Final Tier 4 | 2-valve, wastegate turbo | Common rail | 99–148 hp (74–110 kW) |
| PWL | 4045HFC04 | Final Tier 4 | 4-valve, wastegate turbo | Common rail | 85–140 hp (63–104 kW) |
| PSL | 4045HFC06 | Final Tier 4 | 4-valve, two turbos in series | Common rail | 125–173 hp (93–129 kW) |
| EWX | 4045TI530 | Final Tier 4 / Stage V | 2-valve, wastegate turbo | Common rail | 74 hp (55 kW) |
| EWS | 4045HI551 | Final Tier 4 / Stage V | 2-valve, wastegate turbo | Common rail | 99–148 hp (74–110 kW) |
| PWS | 4045HI550 | Final Tier 4 / Stage V | 4-valve, wastegate turbo | Common rail | 99–140 hp (74–104 kW) |
| PSS | 4045CI550, 4045CI551 | Final Tier 4 / Stage V | 4-valve, two turbos in series | Common rail | 125–173 hp (93–129 kW) |
- PowerTech E is a 2-valve engine with common-rail injection; the 4-valve head comes with PowerTech Plus.
- PVS is a 6.8 L name. Deere lists no 4.5 L PVS.
- Interim Tier 4 4.5 L engines were certified in 2011 as PowerTech PWX and PVX (wastegate or variable-geometry turbo, plus an exhaust filter). iT4 tractors such as the 5085M carry this generation; read the suffix from the engine plate.
Reading the engine plate
Deere engine serial numbers have 13 characters: factory code (2 letters), cylinders (1 digit), displacement (3 digits), emissions level (L = Tier 3, R = Interim Tier 4, U or V = Final Tier 4 / Stage V) and a six-digit build number. The Nebraska-tested 5130M carried PE4045U178463, a Final Tier 4 4045. The engine model code adds the aspiration letter (D, T or H).
Which machines use the 4045
- 5E: 5090E and 5100E (PowerTech 4045 PWL, 90 and 100 hp).
- 5M: 5095M to 5130M (PowerTech 4045 EWL; 5130M 130 hp at 2,200 rpm).
- 6M: 6M 95 and 6M 120 (PowerTech EWL).
- 6E: 6105E and 6120E (PowerTech PWL).
- 6R: 6R 110 and 6R 120 (PowerTech PSS); the earlier 6130R ran a twin-turbo 4045.
- 6D: 6100D to 6140D (4045HP052/053, 4045TP060/070/071).
- Sprayers: the R4023 self-propelled sprayer (4.5 L).
- Other brands: Deere parts guides list 4045 OEM engines for Kukje and Wirtgen machines and for generator sets.
To find your own tractor’s rating, use the John Deere catalogue.
Maintenance basics: oil capacity and intervals
Oil capacity varies with each machine’s oil pan. Deere’s crankcase figures, including the filter:
| Machine | Engine oil with filter |
|---|---|
| 6D series (6100D–6140D) | 3.2 US gal (12 L) |
| 5M series, 4.5 L models (2022 guide) | 3.4 US gal (13 L) |
| 6105E / 6120E | 4 US gal (15 L) |
| 6R 110 / 6R 120, 6110R–6130R, 6M 120 | 4.2 US gal (16 L) |
| 6M 95 | 4.5 US gal (17 L) |
Oil change intervals depend on the machine and the oil:
- 6R and 6M Final Tier 4: 500 hours or yearly with Plus-50 II, a John Deere filter and diesel under 15 ppm sulfur; otherwise 250 hours.
- 5M Final Tier 4: 100 hours, then every 300 hours; up to 500 hours with Plus-50 II and a John Deere filter.
- 6D Tier 3: 500 hours (250 hours from engine serial 800000 without Plus-50 or an ACEA E4/E5 oil), and at least once a year.
- Industrial engines: oil and fuel filters at 500 hours or 12 months.
Final Tier 4 and Stage V engines also need emissions system service at the hours in the operator’s manual, which has the final word.
Typical fuel use and how to measure it
Nebraska tests give the cleanest comparison because every tractor runs the same procedure. Maximum PTO power, held for one hour:
| Tractor (test) | Max PTO power | Fuel use | Efficiency |
|---|---|---|---|
| 5100E (Test 2142, 2016) | 90.7 hp (67.6 kW) | 5.41 gal/h (20.5 L/h) | 16.75 hp-h/gal |
| 5095M (Test 2270, 2023) | 90.1 hp (67.2 kW) | 5.18 gal/h (19.6 L/h) | 17.38 hp-h/gal |
| 6130R (Summary 1142, 2017) | 125.3 hp (93.5 kW) | 7.28 gal/h (27.6 L/h) | 17.2 hp-h/gal |
| 5130M (Test 2273, 2023) | 125.5 hp (93.6 kW) | 6.82 gal/h (25.8 L/h) | 18.41 hp-h/gal |
Few jobs hold full power all day. In the 5130M’s varying-load test, fuel use fell with load:
- 6.90 gal/h at 116.9 hp;
- 5.27 gal/h at 77.2 hp;
- 4.21 gal/h at 51.9 hp;
- 1.91 gal/h with almost no load at high rpm.
Work per gallon also drops at light load and high rpm, which is why shifting up and throttling back saves fuel on light jobs.
To measure your own, fill to the same mark before and after a full day on one job and divide gallons by engine hours. Repeat over a few days and log implement and acres to get gallons per acre. Our guide to tractor fuel consumption per hour covers the method.
Economy and power potential
Nebraska shows how much of a 4045’s rating sits in its calibration. The lab produced the 5095M figures by fitting the 5095M engine control module to a 5130M, same engine serial number. The two calibrations gave 90.1 hp and 125.5 hp maximum PTO power. That is Deere’s factory rating strategy, not a tune, and it does not mean every 4045 can run the top rating: variant, turbo, cooling and driveline all set limits.
Recent 4045s are electronically managed. Our earlier work on a 2021 industrial 4045 with a Phoenix L33 controller was done non-invasively, by programming through the factory-fitted diagnostic port. An Eco Tractor Tune calibration is matched to the engine variant and confirmed on the dyno or with a before-and-after fuel log:
- Eco tuning aims for more usable torque in the working rev range, so you can shift up and throttle back.
- Performance tuning focuses on torque and power for heavier work.
Any saving or gain depends on the machine and the work. See how we measure it on our tractor dyno tuning page.
Other John Deere engine pages: 6068 (6.8 L), 6090 (9.0 L) and 6135 (13.5 L).
Frequently asked questions
How much horsepower does a John Deere 4045 have?
Industrial ratings run from 74 to 173 hp (55–129 kW) by variant; generator versions reach 197 hp standby. Current tractors rate it from 90 hp (5090E) to 130 hp (5130M), or 140 hp on a 6M 120 with Intelligent Power Management.
How much oil does a John Deere 4045 hold?
Deere lists 3.2 to 4.5 US gal (12 to 17 L) with filter, from 12 L on 6D tractors to 17 L on the 6M 95. Check your operator’s manual.
What is the difference between a 4045T and a 4045H?
It is the aspiration code: T is turbocharged, H is turbocharged with an air-to-air aftercooler that cools the intake charge. A 4045D is naturally aspirated.
What tractors use the John Deere 4045 engine?
Current examples: 5090E/5100E, 5095M–5130M, 6105E/6120E, 6M 95/120 and 6R 110/120. Older: the 6130R and the 6D series.
How often should I change the oil in a 4045?
Recent 6R and 6M tractors: 500 hours or yearly with Plus-50 II, a John Deere filter and ultra-low-sulfur diesel, otherwise 250 hours. The 5M Final Tier 4 has a first change at 100 hours, then every 300 hours.