The LDFI0506 Plunger & Barrel Group from SRT Automotive (formerly Lucas Diesel Systems) is a new aftermarket replacement component intended for compatible Ford® 7.3L Power Stroke and Navistar® T444E HEUI diesel fuel injectors using the 06060/31 PRIME-type plunger and barrel configuration.
Designed for professional diesel fuel-injection rebuilding and repair, this precision-matched plunger and barrel group forms part of the injector's fuel-pressurization system. During injector operation, the plunger moves within the barrel to develop the high fuel pressures required for injection.
The LDFI0506 corresponds to the 06060/31 component family associated with selected AB and AF injector configurations. This PRIME-type configuration is used in compatible HEUI injectors incorporating pre-injection metering.
Important: This listing is for one plunger and barrel group, not a complete fuel injector. Confirm the injector body code, original plunger-and-barrel reference, and engine application before ordering. Different 7.3L HEUI injector configurations may require different internal components.
Features & Benefits
- New aftermarket HEUI plunger and barrel group
- Designed for compatible Ford® 7.3L Power Stroke and Navistar® T444E injectors
- Corresponds to the 06060/31 PRIME-type component configuration
- 6.0 mm nominal plunger diameter
- Intended for selected AB and AF injector applications
- Suitable for professional injector rebuilding, repair, and remanufacturing
- Supplied in Lucas / SRT Automotive packaging
Product Specifications
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California Diesel SKU: LDFI0506
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SRT Automotive Reference: SRDI0506
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Former Lucas Reference: LDFI0506
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Component Reference: 06060/31
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Product Type: Diesel Fuel Injector Plunger & Barrel Group
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Also Known As: HEUI Plunger and Barrel, Injector Plunger Assembly, Plunger & Barrel Set
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Fuel Type: Diesel
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Injection System: HEUI – Hydraulically Actuated Electronic Unit Injection
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Configuration: PRIME / Split-Shot
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Plunger Diameter: 6.0 mm nominal
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Primary Injector Codes: AB / AF
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Condition: New / Aftermarket
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Product Tier: Aftermarket
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Warranty: 12 Months / 50,000 Miles
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Packaging: Lucas / SRT Automotive Packaging
This product has not been installed or placed into service. Due to bulk handling, storage, inspection, or repackaging, minor cosmetic marks, light scuffs, or small surface imperfections may be present. Components with damage affecting precision mating surfaces, fit, or intended functionality should not be installed.
Compatible Engine Families
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Ford® 7.3L Power Stroke: Selected 1997–1999 applications using compatible AB-code PRIME HEUI injectors
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Navistar® / International® T444E: Selected applications using compatible AB or AF injector configurations
Applications vary according to engine serial number, production date, injector identification code, and calibration. Engine displacement or vehicle model alone does not establish compatibility.
Compatible Injector References
Ford® 7.3L Power Stroke — AB Injector Family
Navistar® T444E — AB Injector Family
- 1824582C94
- 1822803C1
- 1824583C97
- 1825125C1
Navistar® T444E — AF Injector Family
- 1833647C1
- 1833643C1
- 1833641C1
Fitment Verification: These complete injector references identify the corresponding AB and AF injector families documented in the DIPACO HEUI application guide. Confirm the original injector body code and 06060/31 plunger-and-barrel configuration before ordering.
Cross Reference Information
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LDFI0506: Lucas Diesel Systems reference
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SRDI0506: SRT Automotive reference
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06060/31: Component reference
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DPE06060/31: DIPACO aftermarket application reference
Important: The DIPACO 06060/31 family is also documented for certain BE injector configurations. SRT application coverage should be confirmed before ordering this product for BE injectors.
Other plunger-and-barrel groups, including 06000/31 and 06061/31, serve different injector configurations and should not be substituted without technical verification.
Professional Installation
HEUI plunger and barrel components require precise assembly, correct component matching, and appropriate cleanliness procedures.
Installation should be completed by a qualified diesel fuel-injection technician using suitable tooling and the applicable service procedures.
Professional injector calibration and test-bench verification are recommended after installation to confirm fuel delivery, leakage, and correct injector operation.
Warranty
This aftermarket product is backed by a 12-month / 50,000-mile limited warranty, subject to California Diesel warranty terms and proper professional installation.
Packaging
Supplied in Lucas / SRT Automotive packaging. Packaging appearance may vary between previous Lucas Diesel Systems branding and current SRT Automotive branding.
California Diesel Note
California Diesel supplies replacement diesel, automotive and heavy-equipment components for repair facilities, fleets and professional service applications.
For compatibility assistance, contact sales@california-diesel.com or call +1 (951) 234-1022.
Legal Compliance
Ford®, Power Stroke®, Navistar®, International®, DIPACO, and other third-party brand names, part numbers, and trademarks are used solely for identification and compatibility information. They remain the property of their respective owners.
Such references do not imply that this aftermarket component is manufactured, authorized, or endorsed by those vehicle, engine, or component manufacturers.
California Proposition 65
WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov.
