Let's admit. Sometimes, the guy in the parts counter doesn't know jack what we are talking about when buying parts. So there are some of the part#'s of parts I've bought over the years for my ae86.
Engine/Drivetrain
(90915-YZZF2) - Toyota oil filter
(BCPR5EIX-11) - NGK Iridium spark plugs
(17173-16011) - exhaust-side gasket
(17171-16012) - intake-side gasket
(17177-16012) - intake-side gasket (I think this is the TVIS gasket)
(25628-16010) - egr gasket
(90311-70007) - rear main oil seal
(96711-24013) - bypass water pipe o-ring
(90430-18009) - valve cover grommets
(33403-19135) - speedometer gear for gt-s
Suspension
(48131-AE801-60) - TRD race front springs, 6.0kg/mm
(48231-AE801-43) - TRD race rear springs, 4.3kg/mm
(48231-AE801-60) - TRD race rear spings, 6.0kg/mm
(PAT30-31PFR) - Tein adjustable camber plates
(K9083) - Moog lower ball joints
(EV168) - Moog inner tie rod (for power steering rack)
(ES2243R) - Moog outer tie rods
(BTF35Z-4) - Whiteline 4-way adjustable front swaybar
(BTR25Z-4) - Whiteline 4-way adjustable rear swaybar
(48258-12010) - rear coil spring rubber insulator
(90311-52509) - rear axle seal
(42185-14010) - rear axle housing gasket (metal)
(42425-14010) - rear axle seal gasket (paper)