HPD Special Parts
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HPD Special Parts EGR cooler delete plates for 4JJ1 engines cleanly block the factory EGR path to help keep your intake clean and restore crisp throttle response. Ideal for RA7 builds and early Colorado 4JJ1 setups when paired with correct ECU management.
Simple, reliable plates that remove the hot, sooty EGR feed into your intake. Reduces carbon build-up, improves airflow consistency, and preps the platform for turbo/intercooler upgrades. CNC-cut for a neat seal and quick install.
Key Benefits:
Note: For off-road / competition use. ECU management required. See legal section below.
These HPD EGR delete plates are designed for specific early 4JJ1-TC configurations:
⚠️ CRITICAL: Suits the single-cooler EGR layout ONLY (not the 2-bolt or 3-bolt variants). Check your EGR configuration before ordering to ensure proper fitment.
Inspect your EGR assembly:
Not sure which configuration you have? Send us a photo of your EGR cooler and we'll confirm compatibility before you order.
Note: Hardware and gaskets not included. Reuse factory hardware or source separately as needed.
For off-road / competition use only where permitted. Compliance and road legality vary by state — check local laws before purchase or installation. Buyer is responsible for fitment verification and legal compliance.
Q: Will this fit my RA7 Rodeo?
A: Yes, if you have the single-cooler EGR layout. Does NOT suit 2-bolt or 3-bolt variants. Check your configuration before ordering.
Q: Will this fit early Colorado RC?
A: Yes, fits approximately 2009 Colorado RC with 4JJ1-TC and single-cooler EGR layout. Verify your specific configuration.
Q: What's included in the kit?
A: Plates only. Hardware and gaskets not included — reuse factory hardware or source separately.
Q: Do I need a remap after installation?
A: Yes — ECU remap or EGR delete harness required to prevent fault codes and limp mode.
Q: Is this legal for road use?
A: Generally no. For off-road and motorsport applications only. Removing emissions equipment is typically illegal for road-registered vehicles.
Q: Does this help with carbon build-up?
A: Yes! Blocking EGR prevents hot, sooty exhaust from entering the intake, reducing carbon accumulation.
Q: Can I revert to stock later?
A: Yes. The modification is reversible — refit the factory EGR hardware if needed. Keep your original parts.
HPD EGR delete plates. CNC anodised alloy. Blocks carbon build-up. ECU management required. Single-cooler layout.
Disclaimer: Common Rail Cowboys is not affiliated with Holden/Isuzu. Fitment verification and legal compliance are the buyer's responsibility.
