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Winch Input Shaft & Clutch Cover O-Ring for John Deere 4000 Winch, 650K, 648H – T40703

SKU:
T40703
FitsModel:
450J-650J, 450K-650K, 450P-650P, 700J, 700K, 700L, 700P, 714PR, 444-444D, 544B-544D, 544G, 644B, 644G, 646, 646B, 360D, 460D, 560D, 660D, 540E-748E, 540G-848G, 540G-II-748G-II, 540G-III-748G-III, 540H-848H, 648HTJ-848HTJ, 40, 4000, 4000S Winch
ListDescription:
Winch Input Shaft and Clutch Cover O-Ring
Winch input shaft and clutch cover O-ring T40703 for John Deere 4000 Series winch
Part # T40703

Fits Models At A Glance:

  • John Deere Crawler Dozers (J Series): 450J, 550J, 650J — Serial Number 159987 and Up; 700J — Serial Number 139436 and Up
  • John Deere Crawler Dozers (K Series): 450K — Serial Number 304771 and Up; 550K, 650K, 700K
  • John Deere Crawler Dozers (L, P & PR Series): 700L — Serial Number 383562 and Up; 450P, 550P, 650P — Serial Number 01837 and Up; 700P — Serial Number 11340 and Up; 714PR
  • John Deere 4WD Loaders: 444, 444C, 444CH, 444D, 544B, 544C, 544D, 544G (G-Tier), 644B, 644G (G-Tier)
  • John Deere Compactors: 646, 646B
  • John Deere Forestry – D Series Skidders: 360D, 460D, 560D, 660D
  • John Deere Forestry – E Series Skidders: 540E, 640E, 740E, 548E, 648E, 748E
  • John Deere Forestry – G Series Skidders: 540G — Before Serial Number 624870; 548G — Before Serial Number 578013; 640G — Before Serial Number 612567; 648G — Before Serial Number 612635; 740G, 748G, 848G
  • John Deere Forestry – G-II Series Skidders: 540G-II, 548G-II, 640G-II, 648G-II, 748G-II
  • John Deere Forestry – G-III Series Skidders: 540G-III, 548G-III, 640G-III, 648G-III, 748G-III
  • John Deere Forestry – H Series Skidders: 540H, 548H, 640H, 648H, 748H, 848H, 648HTJ, 748HTJ, 848HTJ

Key Notes:

  • Part Numbers: T40703
  • Type: O-ring, winch input shaft and clutch cover
  • Winch Compatibility: John Deere Model 40, 4000 and 4000S winches
  • Other Applications: The same O-ring is also used on the John Deere 444–644 loaders and 646 compactors listed above
  • Weight: 0.01 lbs (0.005 kg)
  • Serial Number Notes: On the J, K, L and P Series dozers, fits machines from the serial numbers shown above. On the 540G, 548G, 640G and 648G, fits machines built before the serial numbers shown above. All other models listed fit every serial number.
  • Related Parts: 4000 Series winch parts — clutch input shaft bearing AT139681, clutch piston R81735, clutch sealing piston ring R33248, return spring disc R67840, friction disc RE239058, 1st and 2nd speed piston seal R33246, piston and rod packing seal R46218, side cover O-ring T51625, free spool internal oil seal AT173348
  • Application: Seals the winch input shaft and clutch cover on the John Deere 4000 Series winch, keeping winch oil in and dirt out.
  • Condition: Replacement Part for John Deere Equipment

Common Use Case or Symptoms: Use when oil is leaking at the winch clutch cover or input shaft, or any time the winch clutch cover is removed — O-rings should always be replaced when a cover comes off.

Why Choose Broken Tractor:

  • ✅ Stops Oil Leaks at the Winch Clutch Cover – replace it every time the cover comes off
  • ✅ Part of a Complete 4000 Series Winch Rebuild Lineup – bearings, seals, pistons and discs
  • ✅ Fast Shipping from a U.S.-Based Team – ready to ship from our U.S. warehouses
$8.00

Shipping calculated at checkout. If any item in your order is temporarily unavailable, we'll contact you to arrange a back-order or refund — whichever you prefer.

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Product: Category: Brand: Head Title: Winch Clutch Cover O-Ring | Broken Tractor | T40703