Modern Age 2025 Updated JIS mark head # metallurgy increase w / the highest salt spray rating surface treatment that could come combined on a single double SEMS bolt is reality .

-  NEW 6pc Thermostat Housings PLUG & PLAY

- Violet BLUE Silver Zinc Plated Salt Spray Rated 

- Fits : F1.5 2F 3F CARB. 3FE / 3F-E 1972 -1990 FJ40 FJ60 FJ55 FJ43 FJ62 FJ80

- The main housing 12mm hex bolts are a DOUBLE SEMS washer type JIS SEMS #7 Mark head ,

- the two Block Face 14mm HEX Double JIS SEMS #8 mark head Bolts .

- ALL have highest possible salt spray rating plating that also met the other criteria too JIS strength update  

- So we are much stronger then the current weak and corrosion-prone toyota offerings in every way !

-  we have the additional flat washer to better spread the torque yield pressure across a wider flat surface evenly , and our Violet Blue Silver Zinc Plating will outlast the simple- minded-grade hot dipped galvanized crap you have now from your local  dealer 

- lastly these housing bolt are the exact same Length , Thread Pitch & Diameter  as the oem original ones , i could not find any comparable product out there that met this spec. ,