I have just checked coupons. The lowest price I could get is 41.39 USD for Water Oil Temp Turbo (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest coupon and price update (UTC):
Banggood (41.39 USD)
Banggood warehouse is located in China. Is it expensive? Hmmm, price is higher than average (which is 37.97 USD right now), so better set price alert down below… There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Price without coupon: 43.99 USD
Coupon (41.39 USD): BGAMMT03
(CouponsFromChina.com tip: coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Coupon (15.4.2024, $40.99): BG54b4c7
Item: P24 Head Up Display Dual System Water Oil Temp Turbo Press lnclinometer OBD2
Countries: CzechRepublic, Greece, Hungary, Poland, Slovakia(SlovakRepublic)
Old coupons (from the oldest to the newest): BGSCM11
(these coupons are old, so probably won’t work)
Aliexpress
Click here… to search for P24 Head Up Display Dual System Water Oil Temp Turbo Press lnclinometer OBD2 on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for P24 Head Up Display Dual System Water Oil Temp Turbo Press lnclinometer OBD2 is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).