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K&N 57-0421 57i Induction Kit fits VW Golf Mk4 GTI 1.8T
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$640.00
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Or 4 interest-free payments of
$160.00
In stock at 1 of our locations
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Free NZ shipping
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12 month warranty on all parts
✅
NZ WOF compliant
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Fitting available NZ wide
57i Series Intake Kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical performance induction kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. Gen 1's take advantage of the added airflow provided by an oversized air filter released from the restrictive factory air box.
These kits bring engine airflow out of the factory box by providing a large size open-air conical or round High-Flow Air Filter. The extra surface area of these open-air air filters provide even more airflow at lower restriction than a K&N OE replacement filter which is always limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 160,000km). The filter is then either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adaptors are made from high quality materials such as steel, aluminum, silicon or reinforced nylon and ensure long life.
- Designed to Increase HP and Acceleration
- Engineered to Specific Vehicle Design
- Easy to Install, Usually in 90 minutes or less!
- Lasts up to 160,000km Before Service is Required (depending on driving conditions)
- High Performance Induction System
- Million Mile Limited Warranty
- Replaces OEM Filter and Air Box
- Air Filter is Washable and Reusable
- Works with Original Equipment Manufacturer Computer Systems
These kits bring engine airflow out of the factory box by providing a large size open-air conical or round High-Flow Air Filter. The extra surface area of these open-air air filters provide even more airflow at lower restriction than a K&N OE replacement filter which is always limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 160,000km). The filter is then either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adaptors are made from high quality materials such as steel, aluminum, silicon or reinforced nylon and ensure long life.
- Designed to Increase HP and Acceleration
- Engineered to Specific Vehicle Design
- Easy to Install, Usually in 90 minutes or less!
- Lasts up to 160,000km Before Service is Required (depending on driving conditions)
- High Performance Induction System
- Million Mile Limited Warranty
- Replaces OEM Filter and Air Box
- Air Filter is Washable and Reusable
- Works with Original Equipment Manufacturer Computer Systems
Shipping Information
Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.
The Kren Bits journey:
- Order received — Day 0
- With fulfilment — Day 1–2
- Heading to courier — Day 2–4
- Shipped — Day 3–7
- Almost there — Day 5–10
- Delivered — Day 5–14
Where your part ships from:
Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.
We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.
For more details, visit our Track Your Order page.
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