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BMW 645Ci Replacement Air Mass Meter Information


One of the most critical elements of the engine performance and fuel economy of your BMW 645Ci is the air/fuel mixture being sent through the fuel injectors into the engine cylinders. Ideally, an AFR (air-fuel ratio) of 14.7 to one is delivered to the combustion chambers, a mixture that is neither lean nor rich and, in automotive parlance, known as the stoichiometric mixture. This is the ratio most likely to promote complete combustion for highest performance, lowest emissions and best economy.

Your car's air mass meter is a sensor tied into the main engine computer that provides data regarding the specific density of the air. As air density changes, the computer must take the current air density information and regulate the amount of fuel added to maintain the stoichiometric mixture. A faulty air mass meter must be replaced to maintain top performance and economy. PartsGeek.com has the OEM unit.


They are available for the following BMW 645Ci years: 2005, 2004, 05, 04. This part is also sometimes called BMW 645Ci Air Flow Meters. We stock air mass meter parts for most BMW models including 540i, 740iL, X5, 325i, 525i, 530i, 318i, 330i, 330Ci, 528i, 325Ci, 740i, M5, M3, 750iL, X3, 745Li, Z4, 745i, 325xi, 330xi, 328i, 735i, 323i, 635CSi, 325, 535i, 325is, 318ti, Z3, 530xi, 533i, 325e, 325es, 325iX, 323is, 328is, 323Ci, 318is and 528e.

We stock these Air Mass Meter brands for the BMW 645Ci: Bosch.



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(Read reviews)
Retail Price:
$463.25
Sale Price: $183.98
with FREE Shipping
(2) In Stock
Product SKU: W0133-1828348
Inventory: In Stock
Condition: New

Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part.

Shipping Options:
Free Ground Shipping

Additional Fitment Information: Warehouse: A
Vehicle
• 2005 (05) BMW 645Ci


Click to Enlarge

(Read reviews)
Retail Price:
$463.25
Sale Price: $183.98
with FREE Shipping
(2) In Stock
Product SKU: W0133-1828348
Inventory: In Stock
Condition: New

Made By: OEM
(Original Equipment Manufacturer) - a replacement part made by the manufacturer of the original part.

Shipping Options:
Free Ground Shipping

Additional Fitment Information: Warehouse: A
Vehicle
• 2004 (04) BMW 645Ci


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Some of our Customer Reviews
Very Satisfied
Reviewer: DQL

3/29/09 11:32 AM

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Order Date | 3/22/09

Very Satisfied
Reviewer: Dutch1009

2/9/09 09:04 PM

I am very pleased with the service I received from Parts Geek. My order process was precise and accurate and was received in record time. Many of the other sites I searched were not easy to navigate and the parts I needed were either not easy to find or not for the vehicle they were isted for. Parts Geek has the correct parts listed and the quality of my parts were excellent. I will be returning for future purchases.

Order Date | 2/2/09





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