Skip to content
ALBERTA-BASED · Serving customers across Western Canadasales@northcore.parts
AT505275 Seal, Duo Cone – Fits John Deere
AT505275 Seal, Duo Cone – Fits John Deere – additional image 2AT505275 Seal, Duo Cone – Fits John Deere – additional image 3AT505275 Seal, Duo Cone – Fits John Deere – additional image 4AT505275 Seal, Duo Cone – Fits John Deere – additional image 5AT505275 Seal, Duo Cone – Fits John Deere – additional image 6AT505275 Seal, Duo Cone – Fits John Deere – additional image 7

NC-000907 · Bearings, Bushings, Seals

AT505275 Seal, Duo Cone – Fits John Deere

CAD 1064.26

In stock

Seal, Duo Cone – reference AT505275. Catalogue-listed applications: John Deere. View photos, specifications, CAD pricing and delivery options from NorthCore.

Standard delivery: 3–7 business days. Other services and estimates are shown at checkout. Minimum online order: CAD 100 in parts, excluding shipping and tax. Add this part to your cart to calculate delivery and review your order.

Ask about this part

Part specifications and references

NorthCore code
NC-000907
Reference numbers
AT505275, AT450312, AT353424
Listed package quantity
1
Product information and configuration
Quantity indicated in catalogue: 1

Replacement part: Seal, Duo Cone Fits John Deere. 

Configuration: AT505275 Duo Cone Seal (Final Drive) for John Deere Dozers
This Duo Cone floating oil seal installs in the final drive housing on John Deere crawler dozers, preventing oil leakage and protecting final drive components from contamination by dirt, silt, and sand. It features dual sealing lips and is manufactured from NBR rubber material to OEM specifications.
Specifications
Type: Duo Cone Floating Seal (Final Drive Housing Oil Seal)
Seal Outer Diameter: 312 mm (12.28 in) / approx. 12-1/4 in
Shaft Diameter: 250.30 mm (9.85 in)
Width: 57 mm (2-1/4 in)
Material: NBR (NB50SO)
Weight: approx. 8.4 lbs
Serial Number Restrictions -- Verify Before Ordering
750J STD and LT: After serial number 185664
750J WT and LGP: After serial number 181539
750J-II (all configs): No serial number restriction
750K and 750L (all configs): No serial number restriction
850J STD and LT: After serial number 177273
850J WT and WLT: After serial number 175722
850J LGP: After serial number 180890
850JR: After serial number 175722
850J-II, 850K, 850L, 655K, 755K: No serial number restriction
Compatible Models
John Deere Crawler Dozers: 655K, 750J STD/LT/WT/LGP, 750J-II STD/LT/XLT/LGP, 750K STD/LT/XLT/LGP, 750L STD/XLT/LGP, 755K, 850J STD/LT/WT/WLT/LGP, 850JR, 850J-II, 850K, 850L
Replaces Part Number(s):
AT505275, AT450312, AT353424
New aftermarket replacement part - not remanufactured, not used.

Reference numbers: AT505275, AT450312, AT353424
Application notes
  • One New Aftermarket Replacement AT505275 Duo Cone Seal (Final Drive) for John Deere Dozers
  • Serial Number Restrictions -- Verify Before Ordering
  • 750J STD and LT: After serial number 185664
  • 750J WT and LGP: After serial number 181539
  • 750J-II (all configs): No serial number restriction
  • 750K and 750L (all configs): No serial number restriction
  • 850J STD and LT: After serial number 177273
  • 850J WT and WLT: After serial number 175722
  • 850J LGP: After serial number 180890
  • 850JR: After serial number 175722
  • 850J-II, 850K, 850L, 655K, 755K: No serial number restriction
  • New aftermarket replacement part - not remanufactured, not used.

Browse related parts

NORTHCORE EQUIPMENT SUPPLY

Search the parts catalogue

Browse equipment parts, compare prices and order online. By part number · By category · By equipment make

Prices in CADDelivery across Canada

Minimum parts order: CAD 100 · Shipping and taxes calculated at checkout

THE CATALOGUE

All parts

Loading parts…

MORE THAN A CATALOGUE

Can’t see the part you need?

Tell us what you’re looking for. We’ll work on finding it.

Part details
Shipping and taxes calculated at checkout.Minimum online order: CAD 100 in parts.

Choose your part using the listed numbers and specifications. Availability, shipping and taxes are checked at checkout.

Listed applications
Your parts cart

Your parts cart

Your cart is saved on this device for 30 days. Prices and availability are checked again when you order.

Review your parts and quantities, then continue to delivery and payment.

Delivery and applicable taxes are calculated at checkout.

Need help with this order? Send an enquiry

Send a parts enquiry

Send your request directly to NorthCore. Your selected parts and quantities are included automatically. Machine details are optional.

For kits and packs, tell us the number of units or packs needed. We’ll confirm exactly what is included.

We’ll reply by email. Sending this enquiry does not create an order or take payment.

By sending, you ask NorthCore to contact you about this enquiry. Your details are processed through Formspree, which may process information outside Canada. No marketing signup. Privacy Notice.
PARTS SOURCING

WE CAN HELP

Can’t find your part?

Send us the part number or a description. Our team will look for options and reply by email.

Parts request

Tell us what you need. Only three fields are required (*). Send your request here — no email app needed.

Add machine & company details (optional)
Have photos or a nameplate?
Email them to sales@northcore.parts using the same name and part details. This form sends text only.

We’ll review your details and reply by email. No order or payment is created.

By sending, you ask us to contact you about this enquiry. Your details are processed through Formspree, which may process information outside Canada. No marketing signup. Read our Privacy Notice (new tab) and Terms & Ordering (new tab).