Bosch Solid Brake Discs - Rear Axle - 300mm
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eBay£66.00Visit shop 2x Brake Discs Pair Solid fits MERCEDES SLK350 R172 3.5 Rear 11 to 16 M276.956
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eBay2x Brake Discs Pair Solid fits MERCEDES SLK350 R172 3.5 Rear 11 to 16 M276.956
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2x Brake Discs Pair Solid Rear 300mm 0986479A38 Bosch Set A0004231612 BD1725 NewFree delivery in 1–3 days£66.11Visit shop →
Product Information
Full details
This guide is for vehicle owners and mechanics looking for reliable rear brake disc replacements. The Bosch Solid Brake Discs offer durable performance and meet stringent ECE-R90 standards, ensuring safety and compliance. A key consideration is their solid design, which may differ from vented discs used in some high-performance applications.
All features
| Model Part Number | 0986479A38 |
|---|---|
| Brand | Bosch |
Extended Product Information
FAQs
Do I need to clean the oil off the new brake discs?
Yes, absolutely. The protective oil coating must be removed with a brake cleaner before installation to ensure proper friction with the brake pads and achieve optimal braking performance.
Are these brake discs suitable for performance driving?
These are solid discs designed for standard applications. For high-performance driving with frequent hard braking, vented brake discs generally offer superior heat dissipation and may be more suitable depending on your vehicle's requirements.
What does ECE-R90 norm mean?
The ECE-R90 norm is a European standard ensuring that replacement brake discs and pads meet or exceed the performance and safety specifications of original equipment parts.
How do I know if these discs fit my car?
Verify the dimensions (300mm outer diameter, 10mm thickness, etc.), number of holes, and bolt circle diameter against your vehicle's specifications. You can also cross-reference the part number 0986479A38 with your vehicle's parts catalog.
What is the minimum thickness of the brake disc?
The minimum thickness is 8.3mm. Once the disc wears down to this level, it should be replaced.
Can I install these myself?
If you have mechanical experience and the proper tools, yes. However, brake system work is critical for safety. If you are unsure, it is highly recommended to have them installed by a qualified mechanic.
Troubleshooting
Brake judder or vibration
This can be caused by uneven disc wear, contamination, or improper installation. Ensure discs are perfectly flat, clean, and torqued correctly. Check brake pads for wear and ensure the caliper is functioning properly.
Squealing or noise during braking
Often caused by worn pads, glazed discs, or lack of anti-squeal shims. Ensure pads are compatible and correctly installed. Sometimes, a proper bedding-in procedure can resolve light noise.
Reduced braking effectiveness
Check for oil contamination on the disc surface (ensure it was cleaned properly before installation), worn brake pads, or air in the brake lines. Inspect the entire braking system for leaks or damage.
Pros and Cons
Pros
- Meets ECE-R90 safety standards for reliable braking performance.
- Durable construction suitable for everyday driving.
- Oiled surface for corrosion protection.
- High-carbon material enhances performance and lifespan.
- Extensive cross-reference list for easy part identification.
Cons
- Solid disc design may not offer the same heat dissipation as vented discs for aggressive driving.
- Requires proper cleaning of the oil coating before installation.
- Specific fitment depends on vehicle's rear axle specifications.
Setup, Compatibility & Care
Setup:
- Ensure the vehicle is safely supported on jack stands.
- Remove the wheel.
- Carefully remove the old brake disc and caliper assembly.
- Crucially, clean the new Bosch brake discs thoroughly with a suitable brake cleaner to remove the protective oil coating. Failure to do so can significantly impair braking performance.
- Install the new brake disc onto the hub.
- Reassemble the caliper and brake pads according to the vehicle manufacturer's specifications.
- Repeat for the other side.
- After installation, perform a bedding-in procedure as recommended by your vehicle manufacturer or brake pad supplier.
Compatibility:
These discs are designed for the rear axle and have a 300mm outer diameter, 43mm height, 10mm thickness, 8.3mm minimum thickness, 5 holes, 112mm bolt hole circle diameter, and 67mm centering diameter. Always verify these specifications against your vehicle's requirements or consult a parts catalog using the part number 0986479A38. Refer to the provided cross-references for alternative part numbers and potential fitments.
Care:
Brake discs are wear items. Regular inspection for excessive wear, scoring, or cracking is recommended. Maintain clean brake components; avoid contamination with grease or oil. Ensure brake pads are in good condition and replaced concurrently if worn.