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CP247
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BrandOPTIMAL
MPNBT-1710
OE refs1
SKU0129-BT-1710
GTIN / EAN4031185302807

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Details

SpecificationValue
BrandOPTIMAL
MPNbt-1710
Fitting PositionRear Axle
Height [mm]63.5 mm
Bore Diameter [mm]13.1 mm
Drum diameter [mm]228.4 mm
Outer brake drum diameter [mm]270 mm
max. brake drum reboring dimension [mm]230.6 mm
Inner brake drum height [mm]43 mm
Hole Arrangement/Number5/5
Centering Diameter [mm]58 mm
Bolt Hole Circle Ø [mm]100 mm

OE/OEM numbers (1)

Search by this OE number to find compatible parts

About this product

OPTIMAL Brake Drum (BT-1710) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Fitting Position: Rear Axle, Height [mm]: 63, Rubber mm, Bore Diameter [mm]: Polyurethane, Steel mm, Drum diameter [mm]: 228, Copper mm, Outer brake drum diameter [mm]: 270 mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with SUBARU vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 0 986 477 231, 14.A686.10, 24.0222-8023.1, 26340AA010 and 9 more. Matching these numbers confirms a like-for-like replacement with no loss of function. OPTIMAL is a recognised supplier of automotive braking components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.

Brake Drum buying guide

Why replace this part?

The brake drum provides the friction surface against which the brake shoes press to slow the vehicle. Scored, cracked, or excessively worn drums reduce braking effectiveness and generate heat and noise that accelerates shoe wear.

Signs you need a replacement

  • Pulsating or grabbing rear brakes
  • grinding or scraping noise from the rear when braking
  • deep scoring visible on the drum friction surface
  • drum thickness below minimum specification
  • vibration from the rear under braking

When to replace

Measure drum diameter at each brake service. Replace when worn to minimum specification or when scoring depth exceeds 0.5mm. Always replace as an axle pair.

Installation difficulty:Moderate — requires basic tools and mechanical knowledge

About OPTIMAL

OPTIMAL, founded in Germany, is a well-regarded aftermarket brand specialising in steering, suspension, and wheel bearing components. OPTIMAL produces ball joints, tie rod ends, control arm bushings, wheel bearings, and stabiliser links for European, Asian, and American vehicle applications. Manufactured to stringent quality standards with comprehensive testing protocols, OPTIMAL parts deliver OE-matching fit and performance. Known for excellent value and wide vehicle coverage, OPTIMAL is a popular choice among professional workshops across Europe.

Suitable cars

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Brake Drum OPTIMAL BT-1710compatible car models

Car modelsSUBARU: FORESTER (SF), FORESTER (SG), IMPREZA Coupe (GFC), IMPREZA Estate (GF), IMPREZA Estate (GG), IMPREZA Saloon (GC), IMPREZA Saloon (GD), LEGACY II (BD), LEGACY II Estate (BG)
Engines2.0 AWD (SF5); 2.0 AWD (SG5); 1.6 AWD (GC4); 1.6 (GF3); 1.6 AWD; 1.6 i AWD (GC4); 1.6 AWD (GD5); 1.8 4WD; 2.0 i 4WD (BG5)
Year of manufacture1992-2012
Manufacturer article number (MPN)BT-1710
OE part numbers26340AA010
Compatibility check

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Description and what's included

OPTIMAL bt-1710 . Bolt Hole Circle Ø [mm]: 100 mm. Bore Diameter [mm]: 13,1 mm. Centering Diameter [mm]: 58 mm. Drum diameter [mm]: 228,4 mm. Fitting Position: HA. Height [mm]: 63,5 mm. Hole Arrangement/Number: 5/5. Inner brake drum height [mm]: 43 mm

What's included:
  • 1x Brake Drum
Shipping, returns, warranty

Free UK delivery on orders over £99.00. Express and standard shipping available.

  • Standard delivery: 2-5 business days
  • Express delivery: 1-2 business days
  • Free returns within 14 days
  • All parts backed by manufacturer warranty

Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.

Frequently Asked Questions

Is this Brake Drum compatible with my car?

This Brake Drum fits SUBARU vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.

What specifications does this OPTIMAL Brake Drum have?

This OPTIMAL Brake Drum has the following specifications: Fitting Position: HA; Height [mm]: 63,5 mm; Bore Diameter [mm]: 13,1 mm; Drum diameter [mm]: 228,4 mm; Outer brake drum diameter [mm]: 270 mm; max. brake drum reboring dimension [mm]: 230,6 mm. Check the full specifications table above for complete details.

What OE part numbers does this Brake Drum replace?

This Brake Drum replaces OE part numbers: 26340AA010. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a Brake Drum cost?

This OPTIMAL Brake Drum is available for £50.99. Brake Drum prices vary depending on brand, specifications, and vehicle compatibility. OPTIMAL parts offer a balance of quality and value, backed by our 14-day money-back guarantee.

How do I know when to replace my Brake Drum?

Watch for a grinding or scraping noise when braking, the vehicle pulling to one side, a pulsating brake pedal, or visible scoring and heat cracks on the drum surface. Replace when worn beyond the maximum diameter stamped on the drum.

What tools do I need to replace a Brake Drum?

Tools needed: floor jack and axle stands, lug wrench, brake drum puller (if seized), wire brush, brake cleaner, torque wrench. Difficulty: Moderate DIY. Safety warning: Brake dust inside drums on older vehicles may contain asbestos -- wear an approved respirator and do not use compressed air to clean.

Can I use this part as a replacement for OE 26340AA010?

Yes, this OPTIMAL Brake Drum is a direct replacement for OE part number 26340AA010. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.

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