labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V
labwork (M12) Diesel Fuel Injector is a complete set of 6 new 12mm-thread injectors priced at $79.18, designed for 1988–1990 Dodge 5.9L Cummins 12V engines. Ideal for restoring fuel efficiency and engine performance in older diesel trucks during routine maintenance or rebuilds.
● In stock
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Key features
- Complete set of 6 new injectors
- 12mm thread for secure fitment
- Matches OEM 0432193874
- Improves fuel mileage and power
- Direct fit for 1988-1990 Cummins
- Interchangeable with 3919347 R4720540
- New condition with warranty
Pros
- +Affordable full set at $79.18
- +Restores engine performance and efficiency
- +New units ensure consistent spray pattern
Cons
- −Not a performance upgrade
- −OEM fit only, not for modified engines
About labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V
What is labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V?
The labwork (M12) Diesel Fuel Injector is a full set of six new fuel injectors engineered as a direct replacement for the 1988–1990 Dodge Ram trucks powered by the 5.9L 12V Cummins 4BT engine. These injectors restore precise fuel delivery, improving combustion efficiency, throttle response, and fuel economy. Built to match OEM specifications, each injector features a 12mm thread for secure installation and consistent spray pattern, ensuring reliable engine operation. Sold by Lab Work Auto, this set is new, comes with a warranty, and is intended for stock engine applications.
Key features
- OEM-Spec Design — Matches factory part number 0432193874 for reliable fitment.
- 12mm Thread — Ensures secure mounting and leak-free performance.
- Complete Set of 6 — All injectors needed for full engine service included.
- Fuel Efficiency — Restores optimal spray pattern to improve mileage.
- Direct Fit — No modifications required for 1988–1990 Cummins 12V engines.
- Interchangeable Numbers — Compatible with 3919347, R4720540, and 391-9347.
- New Condition — Fresh units ensure long-term reliability and performance.
Who is labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V for?
This injector set is ideal for diesel truck owners, DIY mechanics, and restoration specialists maintaining or repairing older 12V Cummins engines. It’s best suited for those replacing worn injectors to restore original performance without engine modifications. Professional technicians and home garages alike will appreciate the cost-effective, OEM-matching quality for routine service.
How does labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V compare?
Compared to remanufactured or single-unit injectors, this new full set offers better value and consistency across all cylinders. Unlike performance-tuned injectors, it focuses on restoring stock efficiency rather than increasing horsepower. It matches the fit and function of standard polypropylene rugs in reliability but outperforms them in durability. For owners seeking dependable, no-frills replacements, this set beats pricier branded options while maintaining OEM-level compatibility.
Best use cases
- →Replacing worn injectors in 12V Cummins
- →Restoring fuel economy in older diesels
- →Routine maintenance for 5.9L engines
- →DIY engine rebuilds on Dodge Rams
- →Preventive service before long hauls
Is labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V right for you?
Buy this set if you own a 1988–1990 Dodge with a 5.9L 12V Cummins engine and need reliable, OEM-spec replacements. Suitable for DIYers with basic mechanical skills or professional technicians. Not for modified or high-performance builds. Consider remanufactured sets if budget is tighter, or performance injectors if upgrading power.
How it compares: Compared to remanufactured or single injectors, this new full set offers better consistency and value. It matches OEM performance without the cost of premium brands, making it ideal for stock engine maintenance over modified applications.
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What vehicles fit the labwork (M12) Diesel Fuel Injector?
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This set fits 1988–1990 Dodge Ram trucks with the 5.9L 12V Cummins 4BT engine. Always verify fitment using your VIN with a dealer to ensure compatibility with your specific model.
Does the set include all 6 injectors?
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Yes, the package includes a complete set of 6 new fuel injectors, all with 12mm threads, ready for installation on your Cummins 12V engine without needing additional purchases.
How does this improve engine performance?
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Fresh injectors restore precise fuel spray and timing, improving combustion efficiency. This leads to better throttle response, smoother idle, and increased fuel economy in aging diesel engines.
Is this a performance upgrade?
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No, these injectors are designed to restore original factory performance, not increase horsepower or modify engine output. They are ideal for maintenance, not performance tuning.
Can I install these myself?
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Yes, if you have experience working on diesel engines and the proper tools, you can install these injectors yourself. Otherwise, professional installation is recommended for proper torque and alignment.
How much does labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V cost?
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labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V is $79.18 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V in stock at Lab Work Auto?
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Yes, labwork（M12）Diesel Fuel Injector For 1988-1990 Dodge 5.9L Cummins 4BT Engine 12V is currently in stock at Lab Work Auto.
Specifications
- SKU
- F7-5732