Terrafirma TF859 Drive Flange O-Ring | TF859O-RING
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Replacement O-ring for the Terrafirma TF859 late narrow-type heavy-duty drive flange. Use a fresh seal whenever the drive flange is removed or if the existing O-ring is cut, flattened or leaking.
| Weight | 0.05 kg |
|---|---|
| Dimensions | 5 × 5 × 1 cm |
Brand
Terrafirma
Terrafirma Land Rover parts and 4x4 accessories for suspension, steering, braking, recovery, protection, towing, engine upgrades and exterior equipment.
Twinwoods 4x4 is an authorised Terrafirma distributor, stocking selected parts for Defender, Discovery and Range Rover models. Start with the vehicle and the job, then check the individual product page for lift height, ABS or non-ABS fitment, supplied parts and any fitting requirements.
Find the right Terrafirma parts
Terrafirma is particularly well known for Land Rover suspension and off-road equipment, but the Twinwoods range also covers steering, braking, driveline, engine hoses, exhausts, recovery, towing and exterior accessories.
| Job | Terrafirma parts to look for | Check before ordering |
|---|---|---|
| Suspension replacement or lift | Standard-height suspension kits, lift kits, bushes, spring spacers, panhard rods, drop links and suspension hardware | Vehicle, wheelbase, standard or raised height, suspension type and any early or late fitment split |
| Steering and axle upgrades | Heavy-duty steering bars, steering dampers, track rod ends, drive flanges, axle hardware and electronic differential lockers | Vehicle, axle position, spline count, left-hand or right-hand thread and original steering layout |
| Extended brake hoses | Vehicle-specific brake hose kits for standard and raised suspension | ABS or non-ABS fitment, model year, wheelbase, number of hoses and suspension lift |
| Off-road protection and recovery | Steering guards, diff guards, recovery points, winches, shackles, snatch blocks, compressors and raised breather kits | Vehicle mounting points, rated capacity, supplied fittings and whether drilling or trimming is required |
| Engine and exhaust upgrades | Silicone intercooler hoses, stainless exhaust sections, oil cooler repair kits and related TD5 or TDI components | Vehicle, engine, original part number, exhaust layout and the exact hoses or components included |
| Towing, storage and exterior equipment | Tow bars, receiver drop plates, mud flap brackets, wind deflectors, light guards and expedition storage boxes | Vehicle body style, wheelbase, mounting arrangement, dimensions and any separate fitting kit |
Check Terrafirma fitment before ordering
Terrafirma part numbers normally identify a specific vehicle, suspension setup or accessory configuration. Similar-looking parts are not necessarily interchangeable, particularly where vehicles split by model year, wheelbase, axle, ABS equipment or suspension height.
About Terrafirma
Established in 2007, Terrafirma is the specialist 4x4 accessory brand developed by Allmakes 4x4. The range began with a strong emphasis on Land Rover suspension and off-road equipment and has expanded into steering, braking, driveline, performance, recovery, protection, towing and exterior accessories.
Many Terrafirma accessories are designed around the vehicle’s original or existing mounting points. Individual products may still require drilling, trimming, supporting modifications or additional components, particularly on lifted and heavily modified vehicles, so the fitting information on the product page takes priority.
Related Land Rover parts sections
| Section | Use it for |
|---|---|
| Defender suspension parts | Standard-height and raised suspension kits, bushes, dampers, springs and suspension hardware. |
| Discovery 2 axle and suspension parts | Discovery 2 suspension kits, bushes, drop links, Watts linkage parts and axle components. |
| Heavy-duty steering bars and SUMOBARS | Uprated track rods and drag links for Defender, Discovery and Range Rover Classic. |
| Off-road, winching and recovery | Winches, recovery equipment, protection parts, compressors and off-road accessories. |
| TD5 silicone hoses | Terrafirma and other silicone intercooler hose kits for Defender TD5 and Discovery 2 TD5. |
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Twinwoods 4x4 ships Land Rover parts across the UK and around the world. We regularly send parts overseas and use trusted tracked courier services so UK and international customers can order with confidence.
Standard UK shipments are normally sent with DPD. UK orders containing oils or fluids are normally sent with DHL where required, because some carriers restrict liquid shipments.
Worldwide delivery is available through DPD and DHL Express, depending on the destination, parcel size, weight and available courier services. Add the parts you need to your basket, enter your delivery address, and the checkout will show the available delivery options and prices before payment.
Free mainland UK postage and packaging is available on eligible orders over £99, subject to our delivery terms and conditions.
- Changed your mind within 14 days? UK and EEA consumers have statutory cancellation rights. Tell us within 14 days of receiving your order, then return the goods within the following 14 days.
- Need longer? Eligible products can be returned under our voluntary extended returns policy. Contact us within 60 days of delivery and, once the return has been agreed, send the goods back within 14 days.
- Extended returns must be unused, unfitted, complete and suitable for resale as new. Goods must be undamaged, unmarked and uncontaminated, with all components and accessories supplied and their original product packaging where this formed part of the supplied product.
- A £10 handling charge applies to extended returns. This is charged once per return consignment, regardless of how many eligible products are returned together. It does not apply where your statutory cancellation rights apply.
- Return carriage and safe packing are your responsibility for change-of-mind returns.
- Managed UK returns: where suitable, we can provide a convenient prepaid tracked return service with straightforward drop-off, proof of handover and tracking linked to your return. The cost will be advised before it is arranged and may be deducted from your refund.
- Please do not fit or attempt to fit a part unless you intend to keep it. Fitting, attempted fitting, contamination, damage or excessive handling can substantially reduce the value of the goods. A product which has been fitted or used will not normally qualify for our voluntary extended returns policy.
- Faulty, damaged or incorrectly described? Contact us first. We will advise the appropriate return method and will normally provide a prepaid return service or cover reasonable agreed return costs.
Returns – quick FAQs
How long do I have to return an item?
For UK and EEA consumers, statutory change-of-mind cancellation rights also apply: tell us within 14 days of receiving your order, then return the goods within the following 14 days.
Which products qualify for 60-day returns?
Products purchased for £250 or more are not automatically covered, although we may agree to accept them for return at our discretion. Eligibility is based on the price of each individual product rather than the total order value.
Is there a charge for an extended return?
This charge does not apply where the return is being made under your statutory cancellation rights.
Who pays return carriage?
If an item is faulty, damaged or incorrectly described, contact us first. Where return is reasonably required, we will normally provide a prepaid return service or cover reasonable return costs agreed with us.
What condition must an extended return be in?
Can I fit a part and then return it?
Once a part has been fitted or an attempt has been made to fit it, it may be marked, contaminated, damaged or otherwise unsuitable for resale as a new part. Fitted or used goods will not normally qualify for our voluntary extended returns policy.
Where statutory cancellation rights apply, handling beyond what is reasonably necessary to inspect the goods may result in a reduction to your refund if it has reduced their value.
What if the item is faulty?
Are any items excluded from 60-day returns?
Extended returns must also meet the condition requirements above. Statutory exclusions and any separate statutory rights continue to apply as set out in our full Terms & Conditions.
How do I start a return?
Please include your order number and a brief reason for the return. Do not send anything back until you have received the appropriate return instructions.
Buy with confidence: all new parts sold by Twinwoods 4x4 include at least 12 months manufacturer warranty against defects in materials and workmanship under normal use.
Some products and brands may include a longer warranty period where this is provided by the manufacturer. Where applicable, this will normally be stated on the individual product page or covered by the manufacturer’s own warranty terms.
Warranty cover applies to manufacturing defects. It does not cover misuse, incorrect fitting, competition use unless stated, contamination, modification, damage during installation, normal wear and tear, or failure caused by an unrelated vehicle fault. For certain components, proof of professional fitment may be required.
Warranty claims may require the part to be returned for inspection and/or supplier testing before the claim is accepted. Any advance replacement is discretionary.
Warranty remedies relate to the part itself, meaning repair or replacement, or refund if those are not possible. Warranty does not cover labour, removal or refitting, diagnostics, consumables, travel or other incidental costs.
This warranty is in addition to your legal rights and does not reduce those rights.
For full details, please see our Terms and Conditions.

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