Part number

1903117M91

Type Electrical Parts, Starter Motor
Fits John Deere, Bobcat +2 makes 56 models
5 offers from €208.74 4 suppliers
Starter Motor 579937M91 for Massey Ferguson Tractor MF-20 MF-30 MF-40
Starter Motor 579937M91 for Massey Ferguson Tractor MF-20 MF-30 MF-40
Part # 1903117M91
In stock
€208.74
241.12 USD at supplier
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SupplierESIKS
Based inHong Kong SAR China
Vendor SKU ES4650
Checked
Starter Motor 579937M91 for Massey Ferguson Tractor MF-20 MF-30 MF-40 +5
Starter Motor 579937M91 for Massey Ferguson Tractor MF-20 MF-30 MF-40
Part # 1903117M91
In stock
€212.09
244.99 USD at supplier
Buy
SupplierESIKS
Based inHong Kong SAR China
Vendor SKU ESY36236
Checked
Starter Motor Jd 4.2Kw
Starter Motor Jd 4.2Kw
Part # 1903117M91
In stock
€440.00
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- voltage 12 V- power 4.2 kW- number of teeth 11- 127 mm between upper and lower mounting holes diagonally- reduction gear- L1 215 mm- L2 94 mm- L3 90 mm

SupplierSagroparts
Based inSweden
Vendor SKU STS0001
Checked
Starter Motor 579937M91 for Massey Ferguson Tractor MF-20 MF-30 MF-40 +5
Starter Motor 579937M91 for Massey Ferguson Tractor MF-20 MF-30 MF-40
Part # 1903117M91
Aftermarket
In stock
€212.09
244.99 USD at supplier
Buy

The Starter Motor turns the engine over during ignition and allows everything else to happen. Select at the right price.

SupplierFridayParts
Based inUnited States
OriginAftermarket
Vendor SKU ZPFPHD45018585-1
Checked
Heavy Duty 4.2KW Starter Motor for John Deere 6510-6910 & 6820 Series Tractors
Heavy Duty 4.2KW Starter Motor for John Deere 6510-6910 & 6820 Series Tractors
Part # 1903117M91
2.563 kg
€722.97
835.10 USD at supplier
Buy

When your big John Deere won't turn over on a cold morning or starts getting sluggish after years of hard work, you need a starter that can handle the job. This MAHLE 4.2KW heavy duty starter delivers serious cranking power for those large displacement engines that don't take kindly to weak starters—especially when you've got cattle waiting for feed or crops that need harvesting. What You're Getting Powerful 4.2 kilowatt motor that spins large diesels with authority, even in cold weather Three-bolt mounting design that stays put under heavy vibration and engine torque Ten-tooth pinion gear that meshes perfectly with your flywheel for smooth engagement MAHLE quality construction that handles the high current draw without overheating Left-hand mount with clockwise rotation—exactly what these tractors need Built for Real Farm Work This starter powers up the 6000 series workhorses that handle your biggest jobs—whether that's pulling wide tillage equipment, running large balers, or powering through long harvest days. These aren't light-duty tractors, and they need a starter built to match their capabilities. Made to Last MAHLE builds this starter to handle the punishment of daily farm use. The 4.2KW rating isn't just peak power—it's sustained cranking ability for those stubborn starts when engines are cold or have high hours. Quality internal components resist the wear that comes from repeated high-amperage starting cycles. Installation Notes This is a direct replacement with the same three-bolt pattern and mounting configuration as your original. Check your battery cables and connections while you're in there—a 4.2KW starter draws serious current, and corroded or undersized cables will cause problems down the road. Make sure all three mounting bolts are properly torqued to prevent loosening.

SupplierSutter Bros
Based inUnited States
Weight2.563 kg
Vendor SKU QTP-59621
Checked
Broader search for 1903117M91

Fits these machines

Models listed by the suppliers of this part. 56 in total.

John Deere

6506651066006610680068106900691072207720620562156320 SE6420 SE6510 SE651565206520 SE65306610 SE661566206620 SE6630

Bobcat

200024002410641741843943974

Massey Ferguson

MF-20MF-20CMF-20UMF-2500MF-30MF-30BMF-40MF-40B

Bruunett

Mini 578Mini 678

Other numbers for this part

Suppliers list these numbers for the same part.

579937M91 1903103M91 517533M93 579936M91 534191M91 STS0001 450732R91 596493R92 6651258 6651664 AL81154 RE105298 and 61 more

About this part

Suppliers
4
Offers
5 on this page
In stock
4 of 5
With a price
4 of 4 in stock
Prices
from €208.74 to €440.00, avg €268.23

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