1986 BMW 635CSi Tune-Up Parts
45 parts verified to fit your 1986 BMW 635CSi for a complete tune-up. This is an easy DIY project — estimated 1-2 hours.
Air Filters
(5)primaryFuel Injectors
(8)companionFluids & Additives
(8)consumable
URO Parts
Crankcase Breather Hose
$3.35

Rostra
Engine Oil Pressure Switch
$6.08

GPD
gpd Engine Oil Pressure Switch
$8.05


Hella
HELLA Engine Oil Pressure Switch 003259121
$7.42


Dorman
Oil Drain Plug Standard M12-1.50, Head Size 17mm
$2.97


Dorman
Oil Drain Plug Standard M12-1.50, Head Size 17mm
$2.90


Dorman
Oil Drain Plug Standard M12-1.50, Head Size 17mm
$14.73


Dorman
Oil Drain Plug Standard M12-1.50, Head Size 17mm
$3.49
Tune-Up for Other BMW 635CSi Years
Other Jobs for Your 1986 BMW 635CSi
Frequently Asked Questions
What parts do I need for a tune-up on my 1986 BMW 635CSi?
A complete tune-up on the 1986 BMW 635CSi typically requires air filters, fuel injectors, fluids & additives. All parts shown on this page are verified to fit your specific vehicle.
How long does a tune-up take on a 1986 BMW 635CSi?
A tune-up typically takes 1-2 hours and is rated as easy difficulty. Actual time may vary depending on your experience and the specific parts being replaced.
Can I do a tune-up myself?
Yes! A tune-up is an easy DIY project that most people can do with basic hand tools. It's a great way to save money on labor costs.
Are these parts guaranteed to fit my 1986 BMW 635CSi?
Yes, all parts on this page are verified to fit the 1986 BMW 635CSi using VCDB fitment data from manufacturers. Our fitment information is cross-referenced with industry-standard vehicle databases to ensure accuracy.
What brands make tune-up parts for the 1986 BMW 635CSi?
We carry tune-up parts from trusted brands including aFe, Hengst, K&N, WIX, and Autobest. Filter by brand to find your preferred manufacturer.
How much does a tune-up cost for a 1986 BMW 635CSi?
The cost of a tune-up for the 1986 BMW 635CSi depends on the parts and brands you choose. Browse the parts on this page to see current pricing. Doing the work yourself saves significantly on labor costs.













