BMW E30 3-Series 325i 1987-1992 Bosch 280150715 Fuel Injector a.k.a. 13641734776 or 13641468812 for the M20B25 engine

This post is about the Bosch fuel injector with Bosch part number 280 150 715. It doesn’t have a BMW part number on the part because it’s not used just in BMWs, but based on what I can find by poking around on the Web, BMW allegedly refers to this as part number 13641734776, or 13641468812.

Here is a picture I took and annotated.


If you’re in a hurry and you don’t wanna read a lot of detail then:

Yes, we sell these, used.  Always or almost always in stock. Each unit is tested and guaranteed to basically work but it might or might not leak and the spray pattern might be great or terrible or anywhere in between. Contact us to order this.

If you’re wanna read more, here’s some additional detail.

BMW selects vendor parts that meets its requirements for a particular model. Often the vendor, such as Robert Bosch, provides parts that might fit many vehicle applications.

This particular fuel injector was chosen by BMW for the high revving variation (the M20B25) of its 6 cylinder M20 engine. This was used in the E30 1987-1992 BMWs that used this engine, including the 325i, 325ic, 325is and 325ix.  And yes, they generally stopped making the E30 in 1991 but the convertible soldiered a little longer due to the high level of customer interest.

The 1989-1990 BMW 525i has the same engine and so it also uses this fuel injector.

According to a source whom I consider credible, it is also used in the 1984-1985 BMW 318i.

I wouldn’t be surprised if it’s also used in some other BMW models, and also some other European cars.

The low-revving variation of the M20 engine (M20B27) as used in the E30 325, 325e and 325es does not use this same exact type of fuel injector.

To identify the Bosch part number on the injector, clean it (it’s often grimy when you remove it from the engine; we de-grime it to a reasonable extent before we ship it).  Then, use a bright light and squint at the side of the blue plastic housing, near the top. The Bosch part number you’ll see is 280 150 715. There are some other numbers too. These might be the date or batch, I don’t know. I tend to ignore these other numbers.

Typically we remove such injectors from cars that have forever stopped running. It is extremely unlikely that a fuel injection failure is the reason why someone stopped driving their BMW.

Most typically, on this engine, the cars get junked because people neglect the timing belt replacement. When the belt finally snaps then expensive engine repairs are necessary, so the car’s life ends. However, this sequence of events does not affect the fuel injector negatively unless the car sat in a barn for 20 years as a result, and we tend to avoid such cars.

So, buying a used fuel injector, or six of them, from us isn’t a flat-out dumb decision. Some parts, I don’t recommend buying used.  A/C receiver/driers is the classic example. Water pumps are another. Clutch discs or pressure plates … typically another example. But used fuel injectors might make sense.

New units cost … well, it depends where you look. One of our favorite vendors sells genuine BMW rebuilt units for more than $150 each, if you include the core charge in the math.

By contrast, ours are probably a good deal. You could buy several used units for the price of one such rebuilt unit.  However, our prices are gradually increasing based on supply and demand, so please contact us for the latest pricing.

Other variations of rebuilt ones are also available from various not-so-official sources. One example has a lower price than the genuine BMW rebuild part, but it’s still $69 each including the core charge.  Times six, that’s still a lot of money.

Assuming you’re considering buying used fuel injectors from us: The quality of such units depends on a few things. Fundamentally the electric magnetic valve inside the unit has to work, or the unit is useless. On each unit, we test this valve by energizing it electrically. If we hear a click, then we assume the unit is good as such. No sound, the unit is bad — we assume.

However, there are some subtleties. Even if the valve is closed, I suppose it might be possible for the fuel injector to leak some fuel. I don’t know how likely this is, but we do not test for it. We don’t want to pressurize the fuel injector to test it for leaks. This would involve messy and potentially dangerous work. Besides, we would like these things to be as dry as possible in anticipation of shipping them safely.

Another quality attribute involves the spray pattern. The perfect fuel injector will distribute the fuel in a uniform arc. Over time, however, build-up and dirt in the fuel might affect the spray pattern. Testing a spray pattern properly is a specialized field for which we lack both the talent and the equipment.

We guarantee that the fuel injector will spray fuel under pressure when electrically energized. However, it might or might not leak and the spray pattern could be anything. All this is reflected in the price.

If you’re worried about the spray pattern on the used injectors you buy, maybe pour a can of SeaFoam into the gas tank, after you install the replacement injectors. Allegedly this stuff works wonders for cleaning dirty-ish fuel injection parts, to the point where I kinda wonder why anyone actually needs to buy replacement fuel injectors, ever.  Okay, maybe you had them removed and lying in a bowl and your wife grabbed the bowl, poured milk into it and fed them to the cat (the late cat, presumably). Or your toddler threw them into the swimming pool. Or, maybe it’s a fetish thing, for you. I’m not judging. These are all reasonable reasons for needing replacement fuel injectors, I think. I can’t come up with any other reasons, right now. Anyway, whatever your reasons, I’m happy to sell you some used fuel injectors.

As to core charges: when you buy a rebuilt unit, the vendors tend to charge a core charge per unit. Two such sources we’ve seen each charge $15 per injector. That might not seem like a lot but for six units, but this adds up to $90.  So suddenly we’re talking some serious cash. Of course, if you actually remember where you put your old fuel injectors and you manage to get them clean enough and dry enough so that the gas fumes don’t blow up the FedEx plane (see the movie Castaway for a reminder) or to have the USPS throw you in prison for mailing dangerous stuff,  and you are not too lazy, too absent-minded or too busy to box them up and send them off, and they actually arrive and get processed as planned, then hey, you might actually get your $90 back. Many people consider that too much hassle but the amount is just high enough to at least be irritated about procrastinating about sending the cores back in.

By contrast, we do not charge a core charge. Simple.

As to the little clips that hold the injectors onto the fuel rail, they are not included. Nor are the little rubber o-rings that fit at the top of the injector, where it fits tightly into the fuel rail. If we forget to remove them before shipping … then hey, free ancient rubber o-ring for you. However, after 25 or so years in a harsh environment, they’re probably not in great shape. Replacing them might be prudent.

Also not included are the little rubber o-rings that the snout of the injector fits into, in the intake manifold. Supposedly they’re the same as the ones at the top of the injector.

You can buy these o-rings for $1.50 each from Pelican Parts. You will need twelve. That might be $18 well-spent. Maybe buy a couple extra too, in case you’re clumsy at putting things back together, and you mash one or two of them, like I tend to do.

Nice people, those. We buy many of our own new parts from them. In case you decide against used injectors, then you might also wanna consider these folks as your source for rebuilt units.