Air and Fuel› Air Cleaners, Filters, Intakes and Components

K&N Engineering

K&N 04-10 Opel Astra H 2.0L F/l 57i Series Performance Intake Kit

$203.69

SKU: K001 57S-4900

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The K&N 57S-4900 Performance Airbox is an aftermarket air intake system designed to replace restrictive factory components. It smooths and straightens airflow, allowing the engine to ingest more air for increased power and acceleration. This system includes a high-flow K&N air filter and a fully enclosed air box.
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Part #: 57S-4900

The K&N 57S-4900 Performance Airbox replaces the restrictive factory air filter and air box. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S-4900 Performance Airbox comes with a custom shaped K&N high-flow air filter and a fully enclosed injection molded air box that connects up to the factory air intake hose. The air box has a removable lid for easy access to the filter when cleaning is required. The air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This performance air box is relatively easy to install into the previous air box space with commonly available tools. K&N builds these air box systems to last for the life of your vehicle and they are backed by K&N's Million Mile Limited Warranty. Some K&N 57S Series Performance Airboxes are compliant with the latest TUV emissions and sound regulations. Check the K&N catalog or website for vehicle applications and specific TUV status for each vehicle and air intake.

K&N's easy-to-install performance air box replaces the restrictive factory air filter and air intake housing delivering a guaranteed power gain. This power boosting air intake comes with K&N's famous Million Mile Limited Warranty.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Vehicle Symptoms
  • Loss of engine power during acceleration
  • Poor fuel economy around town
  • Engine hesitation when merging onto highway
  • Sluggish throttle response at higher RPMs
  • Noticing a dirty or clogged factory air filter
Relevant Conversations
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  • 57S-4900 installation time and difficulty
  • K&N performance airbox review and dyno results
  • will K&N airbox work with my factory intake hose
  • car hesitates when accelerating uphill fix
  • washable air filter vs disposable which is better

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandK&N Engineering
Part NumberK001 57S-4900

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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