Diesel Fuel Injector Nozzle For Mercedes-Benz 0020172021
specification & Features
Manufacturer Part Number
0432217134
Interchange Part Number
0432217134
Type
Diesel Fuel injector
Fuel Type
Diesel
Material
Metal+Plastic
Manufacturer Warranty
1 Year
Application
Mercedes-Benz 0020172021, NGK Autolite S153, Champion Denso 15-14
About Product
Our OEM-spec fuel injector nozzle is made for precise performance and will improve your Mercedes 300D/300SD/300TD (1978–1985). With a 5-hole tungsten carbide tip for the best atomization, it gets rid of cold start problems, cuts down on smoke, and brings back factory fuel efficiency. Great for everyday driving, turbo conversions, and using biodiesel.
Great for fixing OM617 injector issues like hard starts, misfires, and oil dilution. There is a 12-month warranty.Our OEM-spec fuel injector nozzle is made for precise performance and will improve your Mercedes 300D/300SD/300TD (1978–1985). With a 5-hole tungsten carbide tip for the best atomization, it gets rid of cold start problems, cuts down on smoke, and brings back factory fuel efficiency. Great for everyday driving, turbo conversions, and using biodiesel.
Products Advantage
1. Precision German engineering for the best spray pattern
Our Diesel Fuel Injector Nozzle For Mercedes-Benz 0020172021 replicates the original Bosch design with 5-hole laser-drilled tungsten carbide tips (0.12mm orifice diameter). This makes a 120° cone-shaped spray pattern that fits the 3.0L L5 engine's pre-chamber design precisely in:
1982–1985 Mercedes 300D sedans-fixes the "cold start misfire" problem that was typical in early electronic injection systems
1978-1981 300SD models - Maintains uniform fuel distribution across all 5 cylinders
Each nozzle undergoes computerized flow testing to assure ±1% departure from OE requirements (210cc/min @ 150 pressure).
2. A service life of 250,000 miles or more
The toughened tungsten carbide tip (92.5 HRA hardness) resists wear 3x longer than typical steel nozzles. Proven in:
300TD wagons with a lot of miles on them had nozzle wear of only 0.003mm after 200,000km in fleet vehicles.
Biodiesel-converted 300CD coupes - Withstands B20 mixes without tip erosion
Has Nord-Lock washers that keep it from coming loose because of engine vibrations.
3. Self-Cleaning Nozzle Design
The tapered needle guide stops carbon from building up, which is a problem for:
City-driven 1984 300SD sedans - Maintains clean injector seats despite stop-and-go traffic
Short-trip 300D taxis - Reduces blockage from incomplete combustion cycles
Automatically clears sediments during regular operation by hydraulic scrubbing action.
4. Construction that can handle vibrations
The forged stainless steel body absorbs harmonic vibrations from:
1983 300TD wagons with worn motor mounts - Prevents hairline cracks
Modified 300D turbodiesels - Handles increased cylinder pressures up to 1800 bar
Characteristics triple-sealed needle valve for leak-free operation.
5. Temperature-Stable Performance
The copper-beryllium thermal compensator maintains exact fuel delivery in:
Cold weather (-30°C) keeps Canadian-market 300SDs from being slow to respond. Desert conditions (50°C+) - Tested in Middle East 300D fleet cars
The flow rate changes by no more than 2% at all working temperatures.
6. Biodiesel that is good for the environment
The special Viton®-lined upper seals keep out:
B20 deterioration in converted 1985 300TD wagons Ethanol-blended diesel in Brazilian-market vehicles
Passes MBN 000.423 material compatibility norms.
Main application scenarios
Daily Commuting in Urban Areas
For: 1983–1985 Mercedes 300D Sedans
This nozzle solves stop-and-go traffic difficulties in city driving:
- Stops you from hesitating when you speed up at traffic lights
- Cuts down on black smoke in heavy traffic (which happens a lot with 300Ds with damaged injectors)
- Keeps the idle speed steady (500±20 RPM) even when starting and stopping a lot
- Increases fuel economy by 8–12% over worn-out nozzles
Family Use and Long-Distance Travel: 1981–1985 Mercedes 300TD Wagons are perfect for this.
Made for family excursions and carrying hefty loads:
✔ Gets rid of "hot start" problems following stops on the highway
✔ Prevents fuel dribbling that generates cabin diesel odors
✔ Handles mountain grades without losing power (tested on Colorado's I-70 passes)
✔ Tows more than 2,500 pounds without misfires (tested with trailers from the same time period)
Pro Tip: The 5-hole spray arrangement keeps the AFR steady, which is especially helpful for carts hauling different loads.
Fixing Common Failure Modes Important for: 1978–1982 Mercedes 300SD (Early Mechanical Injection)
Direct replacement for these old diesel problems:
- Cold beginnings are hard (below 40°F)
- Idle is uneven (cylinders #3 and #4 are misfiring)
- Oil that has been diluted since it didn't burn all the way
- White smoke when warming up
Mechanic Verified: Maryland-based OM617 experts say 92% of the time, the engine starts on the first try after replacing the nozzle in vehicles made before 1982.
Performance Upgrades & Modifications
Best for: Turbocharged 300D and 300CD Coupes
Improves modified engines with:
- Garrett T3 turbo modifications that atomize 15–20% better
- Handles 22+ PSI boost without fuel starvation
- Stops lean circumstances in the RPM range of 2,800 to 3,500 RPM
- Works with pump changes (DB2 gov mods, advance shims)
Dyno Proven: Texas tuners got 143 WHP (up from 125 HP) in 1983 300CDs by using our nozzles with better pumps.
why choose us
why choose our products
Our own production base is centered on one-stop manufacturing of basic components including automobile sensors and engine iniectors. With 0 middleman costs, Ne can achieve a price reduction of 17%+; support order response and customized mass production within 30lays; independently control every link from precision laser weldingechnology to strict quality inspection to ensure that the quality is aligned with OE standards, so helping global customers to reduce cost-effective purchase without worries.
Frequently Asked Questions
Q1: Is this nozzle suitable with my 1980 Mercedes 300SD (W116 chassis)?
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A: Yes, our OE# 0432217134 nozzle works with all 1978–1985 Mercedes 300SD, 300D, 300CD, and 300TD cars that have the OM617 engine. This item is a direct replacement for the Bosch 0020172021 part.
Q2: Can I install this myself or need expert tools?
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A: Basic mechanical abilities can manage installation, but you'll need:
Injector puller tool (MB-specific 001-589-00-91-00)
Torque wrench (22-25 Nm for hold-down bolts)
Nozzle tester to check the opening pressure of 155 to 165 bar
Q3: Will this work with biodiesel mixes?
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A: Yes, our Viton®-sealed nozzles are tested with:
✔ B20 blends (300TD wagons in Germany)
✔ SVO changes (with the right pre-heating)
✔ ULSD (US/CAN standard diesel)
Q4: How do I diagnose if my 300D needs new nozzles?
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A: Watch for these OM617-specific symptoms:
⚠ Long cranking (particularly on vehicles from 1981 to 1983)
⚠ Oil dilution (the dipstick smells like petrol)
⚠ Misfire at 2,200 RPM (classic nozzle wear indicator)
⚠ Black smoke when the weight is heavy (in a wagon or when towing)
Q5: What maintenance does this require?
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A: Simple yet crucial steps:
Annual injector line inspection (prevents air leaks)
Every other year: Change the copper crush washers
Avoid gasoline additives with silicone content 10. Q: Will this work with the 300SD in Canada that has the cold weather package?
A: Absolutely. Our nozzles are:
❄ -40°C tested (Manitoba winter authorized)
❄ Pre-calibrated for block heaters
❄ Resistant to waxing in arctic-grade diesel
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