Ja Morant Surprises Sister With New Jeep For Valentine's Day

Ja Morant held his sister down on Valentine's Day, hooking up his younger sibling with a brand-spankin' new Jeep Wrangler ... a car she's wanted forever!

The Memphis Grizzlies star -- one of the most electric players in the league -- captured the heartwarming moment on video, posting a clip surprising his younger sister, Teniya, on his Instagram Monday.

Morant and Teniya were hanging out in a parking lot when a brand new white Jeep -- with a red bow -- pulled up, and her reaction was priceless!

Teniya immediately started crying tears of joy ... and she gave her brother a big hug before walking over to the whip in disbelief.

The 22-year-old guard was all smiles ... saying, his sister had "been asking for a Jeep for the longest."

And, with V-Day here, and her birthday just around the corner, Ja thought it was time to give the extravagant gift ... which starts at about $30K!

"Happy Valentine's Day and early birthday lil sis," Morant said.

BTW ... Ja isn't the only hooper in the fam. Teniya plays ball, too. She's a junior at Houston H.S. in Tennessee.