I put together a list of most of the M Performance Parts (credit to Neil McRae), some accessories from the F3X that should fit/match the F8X and the correct fluids (credit to Dackelone). After posting part of it and receiving a few PMs, I decided to share it with the community and take the heat for the mistakes I surely made. Keep in mind this is a work in progress.
I am sure there are errors as well as missing items; let me know so I can fix and/or add them.
Please make sure you check the part # before ordering.
Exterior
M Performance Black Kidney Grille / Left M3 (F80) 51712352813
M Performance Black Kidney Grille / Left M4 (F82, F83) 51712352811
M Performance Black Kidney Grille / Right M3 (F80), M4 (F82, F83) 51712352812
M Performance Black Side Gill Trim / Right M3 (F80) 51712356980
M Performance Black Side Gill Trim / Left M3 (F80) 51712356981
M Performance Black Side Gill Trim / Right M4 (F82, F83) 51712356982
M Performance Black Side Gill Trim / Left M4 (F82, F83) 51712356983
M Performance Carbon Fiber Mirror Cap / Right M3 (F80), M4 (F82, F83) 51142348098
M Performance Carbon Fiber Mirror Cap / Left M3 (F80), M4 (F82,F83) 51142348099
M Performance Front Splitter Lower Trim M3 (F80), M4 (F82, F83) 51192350711
M Performance Carbon Fiber Front Splitters M3 (F80), M4 (F82, F83) 51192350712
M Performance Carbon Fiber Rear Deck Spoiler M3 (F80) 51712240832
M Performance Rear Deck Spoiler M3 (F80) 51192349678
M Performance Carbon Fiber Rear Lip Spoiler M4 (F82) 51192350722
M Performance Decal for Rocker Panels M3 (F80) 51142350435
M Performance Decal for Rocker Panels M4 (F82, F83) 51142350706
M Performance Lower Blade Attachment for Rocker Panel M4 (F82, F83) / Left 51192350719
M Performance Lower Blade Attachment for Rocker Panel M4 (F82, F83) / Right 51192350720
M Performance Silencer System M3 (F80), M4 (F82, F83) 18302349921
M Performance Carbon Tailpipe Finisher M3 (F80), M4 (F82, F83) - 93mm 18302358110 - 4 pcs required
M Performance Titanium Tailpipe Finisher M3 (F80), M4 (F82, F83) - 80mm 18302358111 - 4 pcs required
M Performance Rear Diffuser M3 (F80), M4 (F82, F83) 51192350697
M Performance Side Stripes M4 (F82, F83) 51142351090
Interior
M Performance Electronic Steering Wheel M3 (F80), M4 (F82, F83) 32302344148
M Performance Steering Wheel M3 (F80), M4 (F82, F83) 32302344147
M Performance Carbon Fiber Selector Lever M3 (F80), M4 (F82, F83) / DCT 61312343709
M Performance Carbon Fiber Selector Trim M3 (F80), M4 (F82, F83) / DCT LHD 51162358358
M Performance Carbon Fiber Selector Trim M3 (F80), M4 (F82, F83) / DCT RHD 51162358359
M Performance Parking Brake Handle with Alcantara Boot M3 (F80), M4 (F82, F83) LHD 34402358363
M Performance Parking Brake Handle with Alcantara Boot M3 (F80), M4 (F82, F83) RHD 34402358364
M Performance Floor Mats M3 (F80) - Front LHD 51472241468
M Performance Floor Mats M3 (F80) - Front RHD 51472241469
M Performance Floor Mats M3 (F80) - Rear LHD/RHD 51472241470
M Performance Floor Mats M4 (F82, F83) - Front LHD 51472353377
M Performance Floor Mats M4 (F82, F83) - Front RHD 51472353378
M Performance Floor Mats M4 (F82, F83) - Rear LHD/RHD 51472353379
M Performance Stainless Steel Pedal Covers (F30, F31, F32, F33) / Manual & DCT 35002232276
All Weather Floor Mats / Sport Line (F30, F31) - Red Front LHD 51472219800
All Weather Floor Mats / Sport Line (F30, F31) - Red Rear LHD/RHD 51472219803
All Weather Floor Mats / Sport Line (F32, F33) - Red Front LHD 51472348156
All Weather Floor Mats / Sport Line (F32, F33) - Red Rear LHD/RHD 51472348159
All Weather Floor Mats / Basic Line (F30, F31) - Black Front LHD 51472219799
All Weather Floor Mats / Basic Line (F30, F31) - Black Rear LHD/RHD 51472219802
All Weather Floor Mats / Basic Line (F32, F33) - Black Front LHD 51472348155
All Weather Floor Mats / Basic Line (F32, F33) - Black Rear LHD/RHD 51472348158
Luggage Compartment Mat- Sport Line (F30, F31, F32, F33) 51472239937
Luggage Compartment Mat - Modern/Basic Line (F30, F31, F32, F33) 51472239936
Misc.
Safety Triangle Reflector 71606770487
Mounting Bracket 51497167548 - 2 pcs required
Engine Oil (6,5l or 6.9 quarts required)
Europe
BMW Quality Longlife-04 Fully Synthetic Motor Oil SAE 0W-40 ACEA: A3/B4/C3 83210398504
BMW Quality Longlife-04 Fully Synthetic Motor Oil SAE 5W-30 ACEA: A3/B4/C3 83210398507
U.S.
BMW M TwinPower Turbo Longlife-01 Fully Synthetic Motor Oil SAE 0W-40 ACEA: A3/B4 (1 U.S.QT) 83212365945
BMW TwinPower Turbo Longlife-01 Fully Synthetic Motor Oil SAE 5W-30 ACEA: A3/B4 (1 U.S.QT) 83212365946
BMW High Performance Longlife-01 Fully Synthetic Motor Oil SAE 5W-30 ACEA: A3/B3 (1 U.S.QT) 07510017866
BMW High Performance Longlife-01 Fully Synthetic Motor Oil SAE 5W-30 ACEA: A3/B3 (24 x 1 QT enviropack) 07510038678
BMW High Performance Longlife-01 Fully Synthetic Motor Oil SAE 5W-30 ACEA: A3/B3 (55 Gallon Drum) 07510017954
Oil Filter 11427854445
Engine Oil Pan Screw/Plug 11117849396 (Up to 09/14)
Engine Oil Pan Screw/Plug 11137535106 (From 09/14)
Engine Oil Pan Gasket Ring 07119963132 (From 09/14)
Manual Transmission Fluid (1,2l required)
MTF- LT-5 SAE 75W-80 API GL3 GL4 (1l) 83222239654
Differential Fluid (1,2l required)
MSP/A 75W-140 API GL5 (1l) 83229405462
MSP/A 75W-140 API GL5 (60l) 83229407870
MSP/A 75W-140 API GL5 (208l) 83229407871
Differential Screw/Plug 33117525064
Brake + Clutch Fluid
DOT 4 Brake Fluid (12 fl. oz.) 81220142156
BIMMERPOST's gallery showing the parts: