Replace the factory fasteners in the engine bay of your Subaru STI 2015-2021 with titanium bolts, nuts and washers using the TiHex titanium engine bay kit. The kit gives different areas of your engine bay a consistent finish.
The titanium parts are CNC-machined from Grade 5 titanium (Ti-6Al-4V). This material combines low weight with high strength and excellent corrosion resistance. Every titanium part is polished by hand. Coloured finishes are then anodised by hand in your chosen colour.
Choose socket head bolts with Cup Washers for a bold look with more exposed titanium, or low-profile Torx bolts with Step Washers for a lower, cleaner profile.
- CNC-machined Grade 5 titanium (Ti-6Al-4V)
- Lightweight and highly corrosion-resistant
- Hand-polished
- Coloured finishes anodised by hand
- Separate colour choices for bolts, nuts and washers
Kit contents
- Headlights: 4 - M6 Titanium bolts; 4 - Titanium washers
- Power steering reservoir: 2 - M6 Titanium bolts; 2 - M6 Titanium washers; 1 - M8 Titanium bolt
- Front bumper supports: 6 - M6 Titanium bolts; 6 - M6 Titanium washers
- Radiator brackets: 2 - Titanium bolts
- Coolant expansion tank: 2 - M8 Titanium bolts; 1 - M8 Titanium nut
- Ground points: 1 - M8 Titanium bolt
- Alternator belt cover: 1 - M6 Titanium bolt; 1 - M6 Titanium washer
- Vacuum lines: 2 - M8 Titanium bolts
- Blow-off valve: 2 - M8 Titanium bolts
- Hood latch: 2 - M8 Titanium bolts
- Hood brackets: 4 - M8 Titanium nuts
- Fenders: 4 - M6 Titanium bolts; 4 - M6 Titanium washers
- Fuel rail and surrounding brackets: 2 - M6 Titanium bolts; 2 - M8 Titanium bolts
- Secondary air pump cover: 2 - M6 Titanium bolts
- Fuse box and surrounding brackets: 3 - M6 Titanium bolts; 2 - M6 Titanium washers
- MAF sensor: 2 - M4 Titanium bolts
- MAP sensor: 2 - M4 Titanium bolts
Total kit contents
Titanium bolts: 42
Titanium nuts: 5
Titanium washers: 19
Total: 66 parts
Replace plastic clips with titanium bolts
This optional extra is supplied in addition to the base kit.
- Ruitensproeierreservoir
1 - M6 Titanium bolt; 1 - M6 Titanium washer; 1 - M6 Rivet Nut
Whether the existing holes need enlarging is still to be confirmed. Suitable installation tools are required for Rivet Nuts.
Bare Titanium has no anodised layer. Anodised finishes are applied in your chosen TiHex colour after ordering. PVD Blue is a PVD finish, not an anodised colour.
Anodised titanium can show small colour differences due to surface finish, product shape, lighting and viewing angle. Screens may display colours differently. Small differences between anodised parts are normal.
Before installation, check that size, thread pitch, length and version match the original fastener and suit the application.
Use the correct tools and avoid damaging threads or the product.
For safety-critical or highly loaded connections, including brakes, suspension and steering, follow the vehicle or component manufacturer's technical specifications and torque settings.
If you are unsure about suitability, contact TiHex before ordering.
We ship with PostNL from the Netherlands.
- Netherlands and Belgium: €6.75, free from €100.
- Other available EU destinations: €12.95, free from €200.
Coloured finishes are anodised to order. Processing takes up to 3 working days before dispatch, unless the product page states otherwise.
Estimated delivery after dispatch: Netherlands 1 to 3 working days, Belgium 1 to 2 working days and other EU destinations generally 1 to 10 working days, depending on the country. These are estimates. You receive tracking after dispatch.