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The Alpha Competition BMW Oil Thermostat Caps for N54, N55, and S55 engines are high-quality aftermarket parts designed to enhance the cooling efficiency of these specific BMW engine types. These thermostat caps are engineered to allow for a more controlled and efficient cooling process, which is crucial for maintaining optimal engine performance, especially under high-performance or racing conditions.

Constructed from durable materials that can withstand the high temperatures and pressures typical of engine operation, these thermostat caps help regulate the oil temperature more effectively. By maintaining the oil at optimal temperatures, these caps ensure that the engine runs smoothly, reduces wear and tear, and potentially extends the lifespan of the engine.

The Alpha Competition oil thermostat caps are designed for easy installation, replacing the OEM caps without any need for additional modifications. This straightforward installation process allows BMW owners to upgrade their vehicles quickly and effectively, enhancing performance without compromising on reliability.

These caps are particularly important for vehicles equipped with N54, N55, and S55 engines known for their turbocharged performance. Effective thermal management is crucial for these engines, as turbocharging can significantly increase engine temperatures. The enhanced cooling provided by the Alpha Competition caps can lead to improved engine efficiency, power output, and longevity.

ADDITIONAL INFORMATION:

Brand

Material

Aluminium

PREPREG is a common term for a reinforcing fabric such carbon which has been pre-impregnated with a resin system. This resin system (typically epoxy) already includes the proper curing agent. As a result, the prepreg is ready to be laid into the mold without the addition of any more resin. In order for the laminate to cure, an autoclave production process is used, a combination of high pressure and heat.

  • Maximum strength and performance characterictics. In a hand layup production process, it is difficult to achieve 50% fabric and 50% resin content.  Typical hand laminates, even when vacuum bagged, end up with a significant amount of excess resin. Excess resin increases brittleness and reduces overall strength properties. On the other hand, most prepregs contain around 35% resin. This is ideal for maximum cured properties and generally impossible to achieve in normal hand lamination.
  • Uniformity and repeatability. The prepreg is of uniform thickness and each part coming out of the mold may theoretically be the same. Vacuum bagging technology may have some errors in processing, but prepreg ensures production consistency.
  • Reduce curing time. After the thermal curing cycle, no need to wait for the standard 48 hours can be fully cured.
  • Aesthetics. Although prepreg processing still requires mold preparation and demoulding, prepreg processing eliminates air bubbles, makes it easier to obtain a smooth, glossy surface as well as eliminates any seaming lines.

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We offer free tracked shipping on all orders within mainland EU. Orders to remote areas such as Malta, Cyprus, and Iceland may incur a surcharge. Worldwide shipping is also available—please contact us for a quote.

Most orders dispatch within one business day (Monday to Friday). EU delivery takes 3–5 working days from dispatch, and tracking details will be provided via email once your order has shipped.

Please note that import taxes may apply outside the EU, and these are the responsibility of the buyer. Some items may ship directly from our suppliers and may have varying delivery times. If an item is out of stock, we will contact you to discuss the available options.

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RETURNS

Changed your mind? You can return unused, uninstalled items in original packaging within 30 days of delivery. Return shipping is the customer’s responsibility unless the item is faulty.

Custom, used, or built-to-order items are non-returnable.

Once we receive and inspect your return, refunds are typically processed within 10 business days.

If your item is damaged or incorrect, contact us within 48 hours with photos and order details.

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WARRANTY

All VA and VA Motorsports products come with a 1-year limited warranty covering manufacturing defects and fitment issues. For third-party items, warranty terms vary by brand—please check the product listing or contact us for details.

This warranty does not cover wear and tear, incorrect installation, cosmetic damage, labor, or third-party costs.

To start a claim, email us with your order number, issue description, and photos. If the claim is approved, we’ll offer a replacement, store credit, or a refund.

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Alpha Competition BMW N54 N55 S55 Engine Oil Thermostat Caps
Alpha Competition BMW N54 N55 S55 Engine Oil Thermostat Caps