NSK Deep Groove Ball Bearing TM305-A-12 CG20 25x62x17mm
Ex VAT: £19.08
✓ In stock at our Arlesey workshop
Order before 2pm on a working day and this is picked and dispatched the same day by express courier, normally with you in 1–2 working days.
Collection from Arlesey also available — choose it at checkout.
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Get it installed
Visit our workshop and have it fitted by our own transmission specialists.
Delivery and Shipping
Delivery and Shipping
UK delivery — parts we hold in stock
Ordered before 2pm on a working day, these are dispatched the same day by express courier and normally arrive within 1–2 working days.
Parts supplied from our European supplier
A large part of our range is held by our supplier in Germany rather than on our own shelves. We order these in for you as soon as you place the order. They normally dispatch within 7–10 working days, and are then sent on by express courier like anything else. Nothing ships to you direct from Germany — it comes to our Arlesey workshop first, so you deal only with us for returns and warranty.
Collection from Arlesey
Click and collect is available on parts we physically hold. If an item has to come in from our supplier it cannot be collected, and checkout will tell you so before you pay.
International
3–5 working days once dispatched. Any customs charges or excise duties are the responsibility of the buyer.
*Delivery times are estimates and can be affected by factors outside our control.
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NSK TM305-A-12 CG20 Deep Groove Ball Bearing – Opel Gearbox
The NSK TM305-A-12 CG20 is a deep groove ball bearing with C20 internal clearance, designed for Opel/Vauxhall gearbox applications. Open-type construction allows continuous gearbox oil lubrication. NSK is a leading Japanese bearing manufacturer trusted by automotive OEMs worldwide.
Inside Diameter: 25mm
Outside Diameter: 62mm
Width: 17mm
Part Number: TM305-A-12 CG20
OE / Cross References: 90523276 GM, 90.523.276 GM, 0708471 OPEL, 708471 OPEL, 90209004 GM, 90523276 OPEL, 090523276, 090 523 276
What does CG20 clearance mean?
CG20 denotes a specific internal clearance grade suited to gearbox operating conditions, allowing for heat expansion and oil-film thickness within the bearing.
What vehicles use the NSK TM305-A-12 CG20?
This bearing is used in Opel/Vauxhall gearboxes. Cross-reference OE numbers 90523276 (GM/Opel) or 708471 (Opel) to confirm fitment.
Is this an open or sealed bearing?
This is an open bearing without seals or shields, designed to be lubricated by gearbox oil.
What is a deep groove ball bearing?
Deep groove ball bearings are the most versatile bearing type, handling radial loads and moderate axial loads in both directions. They are the most common bearing found in gearboxes.
How do I confirm this is the correct bearing?
Match OE number 90523276 or dimensions: bore 25mm, OD 62mm, width 17mm. Send your UK registration or VIN if you need assistance.
Why Choose Eco Torque?
As specialists in gearbox rebuilds and repairs, Eco Torque takes pride in offering genuine gearbox parts, high-quality aftermarket alternatives and competitive pricing.
Need Help Finding the Right Part?
If you are unsure whether this part is compatible with your vehicle, send us your UK registration number or VIN and we will help you find the correct part.
Reference Number: ET2108
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