I've compiled a small list of info about parts from other forums.
Please feel free to add to the list as you see fit....
DDB108 Distributor Cap
Top entry cap for Lucas 43D, 45D and 59D distributors. Fits many Lotus, Minis (post 74), Land Rovers, English Fords, Jensens, Triumphs, Sunbeams, Innocentis and many other models with 43D/45D & 59D distributors. See DRB104C for matching rotor.
Distributor rotor for later Minis (1974+ up to electronic ignition) and Metros. Search for DDB108 if you also need the distributor cap. 45D & 59D distributors.
09041 Bosch Plug Wire Set
1968 - 1980 MG 1.8L engine
The following came from here... http://www.miniownersoftexas.org/wiki/index.php?title=Modern_equivalent_parts_for_classic_Minis
Here is a list of the "stock" replacement K&N air filters for different Minis.
K&N Part numbers:
E-9172 SPI and MPI
E-2601 1275 single carb 1.5" Stock air box also fits AA
E-9001 Use 2 for Cooper S or 1 Mini 850.
E-2600 Stock 1 3/4 air box
Another way to look at it:
E-9001 Carburettor models 1959 to 1974
E-2600 Carburettor models 1974 to 1982
E-2601 Carburettor models 1982 onwards
E-9172 Fuel Injected models
When it comes to spark plugs, a little "performance" tip here! I've been using Mazda 12A (NOT 13B) rotary engine plugs (NGK or Nippon Denso) for many years. I just tell the guy at the parts counter that I need plugs for an early 80s RX7. Everybody thinks the 4-electrode plug is something new and innovative. Mazda's been using them since the First Gen RX7 and the old RX3 & RX4!
Spin-on Oil Filters
The filter for mid-80s Chrysler 2.2L engines (Omni, Charger, Horizon, etc.) fits and works perfectly.
AC DELCO 93156323
AC DELCO 25011520 (PF 53)
MANN 056 115 561G
PUROLATOR L10241 Metro 1.3L
Mobil M1 102
Canister Oil Filters
If you still have the oil filter canister that takes a cartridge, the old Fram part number is CH816PL.
For a Lucas distributor - ask for a Contact Set for an MG 1300, part number MPE CS207SB Points 45d4 distributor (red) RTC 364 Blue Streak Lucas LU-1685 NAPA # ECH CS208
Again - ask about an MG of similar vintage, part number MPE EP29SB.
The kid behind the sales counter at AutoZone claimed that you can't buy separate condensers and that you need an entire distributor - but the very next day, at the same store, the guy looked it up for me and they had it in stock. BE PERSISTANT!
I think it goes to a mid 70's MG. I took my old one to a rebuilder. They couldn't get parts for it, so they found a similar one.
Delco (Saturn et al) alternators can also be made to work in a Mini, See Wes' writeup on how to do the upgrade at http://www.adocars.com/elf-ado/alternator/Easy_alternator.htm
Bosch 13107 ('79 Ford Fiesta) alternators are a bolt-on replacement (with removal or replacement of plastic alt. plug) for alternator equipped Minis. See http://www.cibolas7.net/17901.html
Michael Playle says: The recommended oil "weight" for classic Minis is 20W50 for most climates. This is because the oil does double duty as engine oil and tranny oil. In very cold climates, 10W40 is recommended as a winter weight oil (occassionally 5W30 in REALLY cold areas). In most of those climates, folks are "storing" their Minis indoors for the winter.
Any brand that has a high ZDDP content. I currently use the Valvoline Racing brand.
Rear wheel cylinders (and rebuild kits)
...are the same as the MG Midget. Not as common anymore but you're more likely to have the parts robot find a 1980 MG Midget than a 1963 Mini Cooper in the catalog/computer.
My Limey one started to give me trouble. I ordered a new one. It crapped out in a month. Now I have a heavy duty one for a Ford truck. Almost all the Ford solenoids will work. They have an extra terminal on the them. Looking at the front, the small terminal on the right is the start switch.
I have no idea what it is for. Mine died, and I took it to Bap/Geon. They took it to the warehouse and found one that looked like it. Works fine.
Weber 45 DCOE carb (with appropriate manifold).
Generic 12v coils
Pre-1984, Minis had external ballast resistors, after that it was inside the coil itself. If you need an external ballast resistor, the moron at XXX couldn't get me a stupid ballast resistor unless I told him what kind of car. I think I said "'74 Dodge Dart, slant 6, auto, green with vinyl roof"
Felpro has a head gasket for the 1275 Sprite/Midget (Spridget) that works just fine on a 1275 Mini. However, I don't remember the stock number. For engine-related stuff I usually ask for pre-1975 Midget parts. At least it gives the person behind the counter something to focus on. For 848cc engines, most of the mini vendors sell the gaskets as small bore and large bore. 850 is small bore: http://www.minimania.com/web/Item/GEG101%2FCOPPER/AddedFrom/Search2%2DHEAD%20GASKET/InvDetail.cfm
for instance. Which means.... you could spec one for a vintage sprite or midget form NAPA. Which means....NAPA Cylinder Head Gasket BA0350140 $13.99 should work fine
Mr. Gasket http://store.summitracing.com/partdetail.asp?part=MRG%2D4364&view=1&N=700+150
Other temps are available. Integrated blanking sleeve makes this a winner