TRIUMPH UKC4454 Gearbox Gear 3RD

( Manufacturer Part Number: UKC4454 ), ( Part Type: Gear ), ( Vintage Part: Yes ), ( Universal Fitment: No ), ( Country Of Origin: United Kingdom )

Review TRIUMPH Speed Gearbox 3rd Gear fits TR7 TR8

The Triumph UKC4454 third gear is a crucial component of the TR7 and TR8 gearboxes produced by Triumph. This gear, specifically designed for these classic British sports cars, is integral to the smooth and efficient transfer of power from the engine to the wheels.

The UKC4454 third gear is manufactured using high-quality steel and precision machined to ensure a perfect fit and reliable performance. Its tooth profile is carefully crafted to provide optimal engagement with the other gears in the box, ensuring a positive and seamless gear change.

This third gear is designed to handle the torque output of the TR7 and TR8 engines, providing sufficient power to propel the vehicle forward with ease. Its dimensions are as follows: the pitch diameter is 145.1mm, the addendum is 21.4mm, and the dedendum is 26.8mm.

The surface finish of the UKC4454 third gear is important for its durability and resistance to wear. It undergoes a rigorous finishing process, including shot peening and nitriding, to ensure a hard and resilient surface. This not only enhances its longevity but also improves its ability to handle the load and stress placed upon it during use.

Furthermore, the UKC4454 third gear is designed to be compatible with the synchromesh system found in the TR7 and TR8 gearboxes. This feature allows for smooth and easy gear changes, even when shifting from a lower gear to a higher one.

In summary, the Triumph UKC4454 third gear is a vital component of the TR7 and TR8 gearboxes, offering reliable and efficient power transmission. Its meticulous manufacturing process, high-quality materials, and robust surface finish ensure a long-lasting and dependable performance for classic car enthusiasts.

Buying a used Triumph UKC4454 third gear for a TR7 or TR8 can be a cost-effective solution for those seeking to repair or upgrade their vehicle's gearbox. Here are some pros and cons to consider before making a purchase:

1. Cost-effective: A used third gear can save you a significant amount of money compared to buying a new one or having your entire gearbox rebuilt.

2. Availability: Used third gears are more readily available on the market, making it easier to find a compatible one for your specific vehicle model.

3. Functional: A used third gear that is in good condition can function effectively, allowing you to drive your vehicle without any major transmission issues.

1. Wear and Tear: A used third gear may have some wear and tear, which could lead to eventual failure or require additional repairs or replacement of other gears in the future.

2. Uncertainty: You cannot be completely sure of the condition of the used gear until you have it inspected by a professional or install it and test drive the vehicle.

3. Compatibility: It is crucial to ensure that the used third gear is compatible with your specific vehicle model and year to avoid any potential transmission issues.

Buying a used Triumph UKC4454 third gear for a TR7 or TR8 can be a cost-effective solution for those seeking to repair or upgrade their vehicle's gearbox. However, it is essential to carefully consider the potential risks, such as wear and tear, uncertainty, and compatibility issues. I would recommend having the used gear inspected by a professional mechanic before installation to ensure its condition and compatibility with your vehicle. Additionally, consider purchasing from a reputable seller to increase the likelihood of receiving a high-quality part.

If you decide to buy a used Triumph UKC4454 third gear, I would recommend purchasing it from a reputable seller or auto parts store. Make sure to ask for any available documentation, such as a warranty or a history of the part's usage. Additionally, have the gear inspected by a professional mechanic before installation to ensure its compatibility with your vehicle and its overall condition. Lastly, consider the cost of potential future repairs or replacements when factoring in the cost of the used gear.

Details:

Have a Wonderful Day!, ID: 6220. Please review all the photos for overall condition and ask any questions prior to purchase. Item is untested. For sale is this Triumph TR7 TR8 4 Speed Gearbox 3rd Gear UKC4454.

This will fit a variety of applications. OEM Original. Review the pictures, read , and make sure that this is right part for your vehicle.

part #: ukc4454 prices

• $50.00-$52.49

specifications othellodrivetrain:

• for models: Tr7, Tr8
• for makes: Triumph
• mpn: Ukc4454
• part type: Gear
• vintage part: Yes
• universal fitment: No
• country of origin: United Kingdom

returns othellodrivetrain:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

payments othellodrivetrain:

• credit card: Discover
• wallet: Paypal
• other

general othellodrivetrain:

• Car Truck Parts Accessories > Transmission Drivetrain > Other Transmission Drivetrain
• condition: Used

seller othellodrivetrain:

• # reviews: 9760
• city: Snohomish, Washington
• rating: 99.7%

shipping othellodrivetrain:

• class: Economy
• cost: $0.00
• transit: 4-7 Days
• service: Economy
• type: Fixed

offer othellodrivetrain:

• availability: In Stock
• sold: 0
• quantity: 1
• best offers: True
• started: December 22, 2025
• options: Ship-to-home

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