happybuySE 5WK9605 Mass Air Flow Sensor Meter: Compatible with BMW 325, 323, 525
Available Options

If your BMW's feeling a bit under the weather—maybe it's the 325, 323, or 525, especially the E46 3 Series—it might just be craving the Mass Air Flow Sensor Meter. This little gadget is like the engine's personal dietitian, meticulously measuring how much air it's gulping down to keep the fuel delivery just right. No guesswork, just smooth, efficient performance.
Why you'll love it:
- Slots right in where the old one was (yep, it's a perfect match for OEM part numbers 5WK9605 and 1432356).
- Not just a pretty face—it boosts your engine's mojo and saves you a trip to the gas station more often.
- And hey, you won't need a PhD to install it. Seriously, it's that easy.
- Fits E46 3 Series
- Model 5WK9605
- Part number 1432356
- Compatible with BMW 325, 323, 525
General specs
- Brand: happybuySE
- Model: 5WK9605
- Seller: Joom
- Compatibility: BMW 325, BMW 323, BMW 525, E46 3 Series
- Part Number: 1432356
- First listed by seller: 6/19/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
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Brand | happybuySE | Automotive parts products | loverapple | happybuySE | loverapple | loverapple |
Model | 5WK9605 | 5WK9605 1432356 | 12147539165, 12147518628, 12141709616 | 0265005303 | 13627558518 | 12141247622 |
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Price | $45.09 | $49.45 | $47.90 | $35.44 | $30.97 | $26.03 |
Seller | Joom | Joom | Joom | Joom | Joom | Joom |
Update | August 28, 2025 | August 28, 2025 | August 28, 2025 | August 28, 2025 | August 28, 2025 | August 28, 2025 |
Compatibility | BMW 325, BMW 323, BMW 525, E46 3 Series | BMW 325, 323, 525 E46 3 Series | BMW 323Ci | BMW E38, BMW E39, BMW E46, BMW E66, BMW E65 | BMW 328i, BMW 335i, BMW X3, BMW X5, BMW Z4 | BMW 318i, BMW 318is, BMW 318ti, BMW Z3 |
Type | Mass Air Flow Sensor | Pressure Sensor | Crankshaft Position Sensor |
Daniel B.
Halifax, NS
June 27, 2025
As a researcher, I spent a lot of time looking into options before buying this, and overall, it's been a solid choice. My BMW is running better now—no more hesitation or weird noises, and fuel efficiency has improved, which is great for my budget. But it's not without flaws; sometimes the engine still feels a bit off, though it's much better than before. I'd say it's extremely reliable for the price, and if you're dealing with similar issues, it's worth a shot. Would I recommend it? Yes, but with the caveat that it might not fix everything perfectly.
- Pros: The sensor fit perfectly into my BMW without any modifications, which was a huge relief. It seemed to improve the engine's responsiveness right away, making drives smoother and more efficient. Installation was straightforward, even for someone like me who isn't a mechanic, and it felt like a direct replacement for the original part.
- Cons: Although it works well, I noticed it didn't completely eliminate the occasional rough idle I was experiencing, which was a bit disappointing. The packaging could have been better protected to prevent any potential damage during shipping, and I wish it came with more detailed instructions for peace of mind.