Quick Answer
Choose an intake hardware kit that matches your air box mounting holes and uses corrosion-resistant materials. For most FK8 owners, a low-profile flush-mount kit with stainless steel bolts and aluminum washers offers the best balance of looks and durability.
Why Upgrade Your Intake Hardware?
Factory intake fasteners are functional but not designed to impress. Replacing them with machined aluminum washers and stainless steel cap screws cleans up the engine bay and can improve airflow by eliminating protruding hardware that disrupts the air box seal.
A dress-up kit is a low-cost mod that makes a visible difference. The trade-off: not all kits fit every aftermarket air box, so you need to verify bolt size and length before buying.
Material Matters: Stainless vs. Standard Steel
Standard steel bolts can rust over time, especially in humid climates or if the car is driven in rain. Stainless steel resists corrosion and keeps its appearance longer. Aluminum washers are lighter and won't rust, but they can gall if over-tightened.
For a daily-driven FK8, stainless steel fasteners with aluminum washers are the sweet spot. Track-only cars might prioritize weight savings with titanium, but that adds cost without much real benefit for most owners.
Decision Rules for Choosing an Intake Hardware Kit
- Check Bolt Size and Length: Most FK8 air boxes use M6 x 1.00 thread pitch bolts. Length should be around 20-25mm to clear the air box without bottoming out. Measure your existing bolts or confirm with the kit specs.
- Match Washer Style to Your Air Box: Flush-mount shoulder washers sit nearly level with the air box surface, creating a clean look. Countersunk washers require a corresponding recess in the plastic. Flat washers are simpler but less refined. If your air box has recessed mounting holes, choose a flush-mount or countersunk kit.
- Prioritize Corrosion Resistance: Stainless steel bolts and aluminum washers resist rust and maintain their appearance. Avoid zinc-plated steel if you live in a wet area or wash the engine bay regularly.
Product Facts
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2017-2021 Honda Civic Type-R FK8 Intake System Dress-Up Hardware Kit: Fits most FK8 Type-R air boxes, including factory air box. Includes 2 machined aluminum flush-mount shoulder washers and 2 M6 x 1.00 x 22mm stainless steel flat head cap-screw bolts. This kit is a direct fit for the factory air box and many aftermarket options, so you don't need to measure or modify anything.
2017-2021 Honda Civic Type-R FK8 Intake System Dress-Up Hardware Kit
Fit Guidance
Best For
- FK8 owners who want a clean, factory-plus look without modifying the air box
- DIY installers looking for a simple 5-minute upgrade with visible results
Not For
- Cars using non-standard air boxes with metric M8 or imperial bolts
- Owners who prefer a fully custom engine bay with anodized colored hardware