GEAR RING FOR JOHN DEERE R88212

The John Deere R88212 reduction gear ring is a transmission part designed for several generations of John Deere tractors. It is used in a mechanical reduction assembly and is identified primarily by its part number and the exact model of the machine. This part number corresponds to applications on the 50, 55, 7000, and 7010 series, with specific model details listed below.

A gear component for the reduction gear assembly

A reduction gear ring is part of the gear set responsible for transmitting motion according to the ratio specified by the tractor’s configuration. Within this family of parts, selecting the correct tooth profile and part number is crucial to ensuring compatibility with the existing reduction gear.

If you are working on the transmission, replacing a worn or damaged ring gear ensures a fresh start that meets the requirements of the intended application. This part number corresponds to a reduction gear ring gear and not to a complete assembly, which helps you precisely identify the part to order.

John Deere Applications Associated with Part Number R88212

Part number R88212 is listed for John Deere tractors in the following series:

• 50 Series
• 55 Series
• 7000 Series
• 7010 Series

A complete list of compatible models is provided in the application list. It includes variants marked “Worldwide,” which must be retained as is when verifying compatibility. This specification is just as important as the serial number or model name when multiple similar versions exist within the same product line.

How to Properly Select This Gear Ring

When selecting a transmission part of this type, identification must be done systematically. The first useful reference is part number R88212. The second is the exact model of your John Deere tractor, including its series and any specific variant. A general description is not always sufficient when a tractor comes in multiple configurations.

Before confirming your order, also make sure that you actually need a reduction gear ring gear. Within the same mechanical assembly, several parts that look similar may coexist: pinion, ring gear, shaft, or differential components, depending on the transmission’s design. If in doubt, checking the maintenance manual or the parts exploded view remains the best way to verify.

A useful guide for targeted repairs

This part is intended for buyers seeking a specific part number to repair a compatible John Deere tractor. The main purpose of this sheet is to allow you to quickly match the part number to the relevant series, without extending compatibility to models not listed.

If your tractor is listed below, simply verify that the part number matches before ordering to ensure you select the correct reduction gear ring for your repair.

Compatibility by Brand and Series

John Deere · 50 Series

• 4050 (Worldwide)
• 4250 (Worldwide)
• 4450 (Worldwide)

John Deere · 55 Series

• 4055 (Worldwide)
• 4255 (Worldwide)
• 4455 (Worldwide)

John Deere · 7000 Series

• 7600 (Worldwide)
• 7700 (Worldwide)
• 7800 (Worldwide)

John Deere · 7010 Series

• 7610
• 7710
• 7710 (Worldwide)
• 7810
• 7810 (Worldwide)

FAQ — Frequently Asked Questions

What is the purpose of a gear ring on a tractor?

A final drive ring gear is part of the final drive gear set. It helps transmit motion and provides the reduction ratio specified by the assembly. To select the correct part, the surest way is to identify it by the part number R88212 and the exact tractor model.

Is this R88212 ring gear compatible with John Deere 50, 55, 7000, and 7010 series tractors?

Yes, this part number is listed for several John Deere tractors in these series. The detailed list of compatible models includes, among others, the 4050, 4250, 4450, 4055, 4255, 4455, 7600, 7700, 7800, 7610, 7710, and 7810, depending on the variants specified in the compatibility chart.

Why do some versions include the “Worldwide” designation?

The “Worldwide” designation is part of the compatible model’s name. It is used to distinguish a specific variant of the tractor in the application list. When verifying compatibility before placing an order, you must therefore use the model’s full name, including this designation when it appears.

How can you correctly identify this part before replacement?

The easiest way is to check part number R88212 and match it to the exact model of your John Deere. Also verify that you are looking for a reduction gear ring gear, and not another component of the transmission assembly. If in doubt, refer to the exploded view or the tractor’s maintenance manual.

Original replacement part numbers and brand names are provided for comparison purposes only. This does not imply that these are original parts.