Flex
Dmax/Mux 4JJ1 Intake Pipe - 3 Inch Upgrade - 2012-2016
Dmax/Mux 4JJ1 Intake Pipe - 3 Inch Upgrade - 2012-2016
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4JJ1 Intake Pipe β 3 Inch Upgrade (2012β2016)
Thai-Made 3" Pie-Cut Intake | Improved Airflow | Reduced Restriction
Thai-made 3" pie-cut intake pipe upgrade for 4JJ1 D-MAX and MU-X engines. Designed to improve airflow, reduce restriction, and clean up the engine bay β whether you're running a stock turbo or an upgraded setup.
Built for reliability, performance, and proper fitment
π§© Product Overview
This 3-inch custom pie-cut intake pipe is fabricated in Thailand using proven diesel performance designs. The larger diameter improves intake flow and turbo response while maintaining strong coupler retention and engine-bay clearance.
Key benefits:
- Increased airflow β 3" diameter reduces restriction
- Improved turbo response β better flow path to turbo inlet
- Clean engine bay appearance β professional pie-cut fabrication
- Quality construction β Thai-made with proper materials
π Technical Specifications
- Diameter: 3 inch (76mm)
- Construction: Pie-cut design
- Origin: Thai-made fabrication
- Clamps: 4Γ heavy-duty T-bolt clamps included
- Couplers: Blue silicone (3.25" β 3.0" and 3.0" β 2.75")
- Finish: Professional diesel performance spec
π§ Vehicle Compatibility
- Isuzu D-MAX β 4JJ1-TC (2006β2012, pre-DPF)
- Isuzu MU-X β 4JJ1-TC (2012, pre-DPF)
β οΈ DOES NOT SUIT: Models with the oil filter mounted high (unless modified/cut).
β οΈ IMPORTANT: Please confirm fitment before ordering. Contact us with your vehicle details if unsure.
π¦ What's Included
- β Thai-spec 3" pie-cut intake pipe
- β 4Γ heavy-duty T-bolt clamps
- β
Blue silicone couplers:
- 3.25" β 3.0" reducer
- 3.0" β 2.75" reducer
Complete kit ready for installation. Professional-grade components for reliable performance.
π οΈ Installation Notes
Professional installation recommended for best results.
Installation tips:
- Ensure correct alignment to prevent boost leaks
- Torque T-bolt clamps evenly for proper seal
- Check clearances β verify no contact with hood or other components
- Not suitable for vehicles with body lifts β clearance issues may occur
- Pressure test after installation β verify no leaks at all connections
β οΈ Note: Does NOT suit models with high-mounted oil filter unless pipe is modified or cut.
π‘ Perfect For β Recommended Applications
Ideal for:
- Stock turbo setups β reduce intake restriction
- Upgraded turbo builds β support increased airflow demands
- Engine bay aesthetics β clean, professional appearance
- Performance tuning β complement other airflow upgrades
Pairs well with:
- Flex Mini F55 or F55 Boost X turbo upgrades
- Front-mount intercooler
- High-flow air filter or intake system
- ECU tuning for optimized air/fuel ratios
π³ Payment & Shipping Options
- πΈ Buy Now, Pay Later: Afterpay, Humm, Klarna & Zip available
- βοΈ Free Express Shipping Australia-Wide
- π¦ Typically ships within 1β2 business days
β οΈ Legal Notice
For off-road / competition use only. Intake modifications may affect compliance. Check local regulations before purchase.
β Frequently Asked Questions
Q: Is this a direct replacement for the factory intake pipe?
A: Yes β designed to replace the factory intake pipe with a larger 3" diameter for improved airflow and reduced restriction.
Q: Will this work with my stock turbo?
A: Yes β works with both stock and upgraded turbos. Reduces intake restriction on any setup.
Q: Does this fit models with high-mounted oil filters?
A: No β this pipe does NOT suit models with high-mounted oil filters unless modified/cut. Check your engine bay configuration before ordering.
Q: Will this fit my vehicle with a body lift?
A: Not suitable for vehicles with body lifts due to clearance issues. Body lifts can cause interference with the hood - it may work with different couplings - untested.
Q: What's included in the kit?
A: Complete kit includes: 3" pie-cut intake pipe, 4Γ heavy-duty T-bolt clamps, and blue silicone couplers (3.25" β 3.0" and 3.0" β 2.75").
Q: Do I need to tune my vehicle after installing this?
A: Not mandatory for intake pipe alone, but ECU tuning can optimize performance when combined with other airflow upgrades.
Q: What's the quality like compared to eBay/AliExpress pipes?
A: This is proper Thai-made fabrication with quality materials and correct fitment β not thin, poorly-made eBay junk.
Q: Can I install this myself?
A: If you're mechanically capable, yes. However, professional installation is recommended to ensure proper fitment and no leaks.
Q: How do I confirm fitment for my vehicle?
A: Contact us with your vehicle year, model, and engine configuration. We can verify fitment before you order.
β‘ UPGRADE AIRFLOW, SHARPEN RESPONSE
Flex 3" intake pipe. Thai-made pie-cut design. Reduced restriction. Improved turbo response. Heavy-duty T-bolt clamps. Complete kit ready to install.
Disclaimer: Common Rail Cowboys is not affiliated with Isuzu Motors or FLEX Thailand. Installation should be performed by a qualified technician. Proper installation and fitment verification are the buyer's responsibility.
