Dresser Dozer Final Drive TD7, TD8, TD9, TD340

Final drive components for Dresser TD7, TD8, TD9, and 100/125-series crawler dozers, including bull gears, bearing cones, bearing cups, seals, top pinion seals, and complete rebuild kits for both the TD7/100 and TD8/125 series platforms.

Fits Models At A Glance

• TD7 Series: TD7, TD7C, TD7E, TD7G, TD7H
• TD8 Series: TD8, TD8C, TD8E, TD8G, TD8H
• TD9 Series: TD9H
• 100 Series: 100, 100C, 100E, 100G
• 125 Series: 125, 125C, 125E, 125G

Key Notes

• Part Types Available: Bull gears, bearing cones, bearing cups/races, final drive seals, top pinion seals, and complete bearing & seal rebuild kits
• Rebuild Kits: Kits available for TD7/100-series and TD8/125-series final drives, consolidating bearings and seals into a single purchase
• Cross-Fitment: Several bearing and seal components cross-fit between TD7/100-series and TD8/125-series machines — verify your specific model suffix before ordering
• Used Parts: Used RH final drive assembly available for TD7C and TD7E models
• Brand Lineage: Dresser dozers share heritage with International Harvester (IH); IH part numbers apply to these machines

Why Choose Broken Tractor

• ✅ Dresser dozer specialists with deep parts knowledge
• ✅ New and used final drive components available
• ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH

Frequently Asked Questions

What comes in a Dresser TD7 or TD8 final drive rebuild kit?

Broken Tractor's final drive rebuild kits combine the bearings and seals into a single purchase, so you are not ordering each piece separately. The TD7 kit (FD-TD7-KIT) fits the TD7, TD7C and TD7E. The TD8 kit (FD-TD8-KIT) fits the TD8, TD8C and TD8E. Confirm your model suffix before ordering so you get the kit for the right platform.

Do Dresser TD7 and TD8 final drive parts interchange?

Some final drive parts interchange between the TD7 and TD8, but not all of them. For example, the 622337C1 bearing cup race, the 1213757C91 bearing cone and the 716720C91 final drive seal fit both the TD7C, TD7E and the TD8C, TD8E. Bull gears and several other bearings are model specific, so match the part number or your exact model suffix before you buy.

Which bull gear fits a Dresser TD8H dozer?

The TD8H uses bull gear 621109C1, the same gear that fits the TD7C, TD7E and TD7H. The TD8C, TD8E and TD9H use a different gear, 621116C1, and 621116C2 also fits the TD8C and TD8E. Because the H series shares parts with the TD7, confirm your model and serial number with our parts team at (800) 909-7060 if you are unsure which gear you need.

Which top pinion seal fits a Dresser TD9H?

The TD9H takes top pinion seal 621129C92, which also fits the TD8, TD8C, TD8E and TD8G. TD7 series machines and the TD8H use a different seal, 621113C93. Check your model before ordering, because the two seals are not interchangeable across those groups.

Can I use IH part numbers for Dresser TD7 and TD8 final drive parts?

Yes, Dresser dozers share their lineage with International Harvester, so IH part numbers apply to these machines. Many of our final drive bearings, seals and bull gears are listed by their IH style numbers, such as 621109C1 or 716720C91. Matching the number stamped on your old part or listed in your parts book is the easiest way to find the correct replacement.