Mercedes 300D Diesel Injector Parts

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Mercedes 300D Diesel Injector
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This hose is fuel rated (EFI) with internal string reinforcement but no external braiding. Sold by the meter, please specify length in quantity of meters.
1987, 1988, 1989, 1990, 1991, 1992, 1993 Mercedes 300D, 300DT
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$37.99
Reg
$39.57
List
$32.50
OEM
If replacing original metal version, also need 1162760929 vacuum connector and 1170780281 vacuum line. 1 per car.
1987, 1988, 1989, 1990, 1991, 1992, 1993 Mercedes 300D, 300DT
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$36.99
Reg
$38.53
List
$33.50
OEM
This unit replaces either NA30X or NA33X versions.
1975, 1976, 1977, 1978, 1979, 1980, 1981 Mercedes 300D
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$49.99
Reg
$52.07
List
$122.00
+Core
$20.00
1 per injector.
1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Mercedes 300D, 300DT
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$2.39
Reg
$2.49
List
$4.70
1 per injector.
1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993 Mercedes 300D, 300DT
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$1.79
Reg
$1.86
List
$5.00
OEM
1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Mercedes 300D, 300DT
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$1.69
Reg
$1.76
List
$4.70
1 per cylinder.
1990, 1991, 1992, 1993 Mercedes 300D
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$52.99
Reg
$55.20
List
$133.50
+Core
$20.00
OEM
1 per car.
1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Mercedes 300D, 300DT
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$4.59
Reg
$4.78
List
$3.20
OEM
1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Mercedes 300D, 300DT
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$0.89
Reg
$0.93
List
$1.90
Diesel delivery valve seal, upper.
1987, 1988, 1989, 1990, 1991, 1992, 1993 Mercedes 300D, 300DT
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$0.69
Reg
$0.72
List
$1.00
1975, 1976, 1977 Mercedes 300D
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Leaves warehouse within 1-2 business days.
$26.99
Reg
$28.11
List
$98.50
+Core
$20.00
OEM
2 per solenoid.
1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Mercedes 300D, 300DT
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$2.89
Reg
$3.01
List
$3.70
OEM
1 per car.
1975, 1976 Mercedes 300D
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$20.79
Reg
$21.66
List
$22.00
1987, 1988, 1989, 1990, 1991, 1992, 1993 Mercedes 300D, 300DT
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$1.89
Reg
$1.97
List
$5.00

Mercedes 300D diesel injector typically cost between $0.69 and $52.99.

What Causes Rough Idle Or Knocking In Mercedes 300D Diesel Injector?

If your Mercedes 300D diesel injector has your engine running rough or knocking, there’s a shortlist of usual suspects. Carbon will start building up on the injector tips as the miles climb. Nozzles wear out, the spray fans out wrong, and cheap diesel or dirty fuel mixes just add to the headache. Even a little water or air sneaking into the system can throw everything off. Good fuel and regular maintenance keep things in check, but sometimes, the problem goes beyond what a bottle of cleaner can fix. If your idle still sounds off, you might need to pull each Mercedes 300D diesel injector and check them out one by one—some may just be too far gone.

How Can I Tell If My Mercedes 300D Diesel Injector Needs Replacement?

A bad Mercedes 300D diesel injector will start showing symptoms before it quits completely. If it’s slow to start, puffs out too much smoke, or feels weaker on the road, those are signals. Fuel leaks around where the injector meets the engine or any wet spots shouldn’t be ignored. That hard tapping or knocking noise while idling also means something’s off. At this point, testing the Mercedes 300D diesel injector with the right tools is the only way to know for sure how serious it is, and if a swap makes sense.

What Is The Best Way To Clean Or Maintain Mercedes 300D Diesel Injector?

Keeping a Mercedes 300D diesel injector running well comes down to habits. Pouring in a fuel system cleaner now and then helps with the smaller stuff, but after enough miles, buildup needs more than a bottle. That’s when it’s worth getting them out for deep cleaning, like ultrasonics. If turning a wrench sounds stressful, a good shop can handle it. Stick to fresh fuel filters on schedule, and you’ll help block grit from making things worse. Skipping basic care is a shortcut to bigger, pricier problems.

Can I Replace A Mercedes 300D Diesel Injector Myself?

You can swap a Mercedes 300D diesel injector yourself, but only if you’re comfortable with engine work. A clean workspace matters—the inside of a diesel system isn’t the place for loose dirt. Tools are basic, but a slide hammer can be handy if one’s stuck. When putting in the new one, use a fresh heat shield and don’t overdo the tightening. Getting all the air out afterward is key, so the engine can start up right. If you’re not sure, pick up a manual or watch a trusted guide—one mistake, and things get complicated fast.

What Is The Average Lifespan Of A Mercedes 300D Diesel Injector?

Most Mercedes 300D diesel injector units last anywhere from 120,000 to 180,000 miles, as long as you stick to maintenance like you should. Good fuel and steady driving push them closer to the upper end. Sloppy care or a bad tank of fuel can cut that timeline down, sometimes by a lot. Checking on the injectors once in a while isn’t overkill—it’s how you catch trouble before it gets expensive.

Why Choose AutohausAZ For Your Mercedes 300D Diesel Injector Needs?

With AutohausAZ, getting a Mercedes 300D diesel injector is straightforward. No flirting with sticker shock, no getting lost in endless options. We stock parts you can rely on, pass on honest pricing, and skip the games. Your order won’t collect dust in a corner—we ship fast, and we back up what we sell with service that actually helps. If something isn’t right, sending it back is simple. We keep the process clear, from adding parts to your cart through unboxing in your garage. When your Mercedes needs help, or you have a question, we’re here—not just a faceless screen. Next time something breaks, remember us. One order, no runaround.