S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty
S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty is a high-flow turbocharger core with 66mm inducer, T4 twin-scroll housing, and 0.91 A/R turbine. Priced at $98.60, it's ideal for performance diesel and forced-induction gasoline engines requiring durable, balanced turbo upgrades.
● In stock
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Key features
- 66mm compressor inducer for high airflow
- T4 twin-scroll turbine inlet
- 0.91 A/R turbine housing ratio
- Lifetime warranty included
- CHRA core assembly ready for build
- Replaces multiple OEM part numbers
- Precision-balanced rotating assembly
Pros
- +High airflow supports 400+ HP builds
- +Twin-scroll design improves spool time
- +Lifetime warranty adds long-term value
- +Compatible with popular S300 platforms
- +Cost-effective vs full turbo replacement
Cons
- −Requires full turbo assembly work
- −Not a drop-in replacement
- −No housing or gaskets included
About S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty
What is S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty?
The S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA is a complete center housing rotating assembly designed for high-performance engine builds. Featuring a 66mm compressor inducer and T4 twin-scroll flange, it supports increased airflow and reduced turbo lag. With a 0.91 A/R ratio turbine housing, this cartridge is engineered for optimal exhaust pulse separation, making it suitable for both diesel and performance gasoline applications. Sold by Lab Work Auto, it comes with a lifetime warranty, indicating long-term reliability for rebuilds and upgrades.
Key features
- 66mm Compressor Inducer — Delivers high airflow for increased horsepower and throttle response.
- T4 Twin-Scroll Turbine Housing — Enhances exhaust pulse energy utilization for faster spool.
- 0.91 A/R Ratio — Balances boost response and top-end power for performance tuning.
- Lifetime Warranty — Backed by Lab Work Auto for durability and buyer confidence.
- CHRA Core Assembly — Complete rotating assembly ready for housing integration.
- Compatible with Multiple Part Numbers — Replaces models like 177275, RE516014, and others listed.
- Precision-Balanced Turbine — Ensures smooth operation at high RPMs.
Who is S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty for?
This turbo cartridge is ideal for automotive enthusiasts, performance tuners, and diesel engine rebuilders seeking a reliable, high-flow turbo core. It suits users upgrading older S300-series turbos or building custom turbo manifolds for street or track use. Mechanically inclined DIYers and professional shops can integrate this CHRA into full turbo systems.
How does S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty compare?
Compared to standard rebuild kits or generic cartridges, this unit offers a larger 66mm inducer and twin-scroll T4 configuration for superior performance. It outperforms single-scroll and smaller-inducer turbos in spool time and airflow capacity. The lifetime warranty sets it apart from budget cartridges lacking long-term support, making it a cost-effective upgrade over OEM replacements and entry-level performance cores.
Best use cases
- →Diesel truck turbo upgrades
- →Performance inline-6 builds
- →Custom T4 manifold applications
- →S300-series turbo rebuilds
- →Track-focused engine swaps
Is S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty right for you?
Buy this turbo cartridge if you're rebuilding or upgrading a performance engine and need a reliable, high-flow core. Ideal for intermediate to advanced users with turbo assembly experience. Not for beginners—requires machining and housing integration. Consider full turbo assemblies if you need plug-and-play. Comparable to OEM+ rebuilds but with better flow and warranty.
How it compares: Outperforms standard CHRA cartridges with larger 66mm inducer and twin-scroll T4 design. More durable than budget cores due to lifetime warranty. Offers better spool and flow than single-scroll 0.82 A/R units, ideal for tuned engines needing balance between response and top-end power.
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$7.91Frequently Asked Questions
What engines is the S300S 66mm turbo compatible with?
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It fits applications using S300-series turbos with T4 flanges and 0.91 A/R housings. Common in diesel and performance gasoline engines like certain inline-6 and V8 platforms requiring custom manifolds.
Does this include the turbo housing?
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No, this is a CHRA (center housing rotating assembly) only. Turbine and compressor housings must be purchased or fabricated separately for full turbo assembly.
How is the twin-scroll design beneficial?
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Twin-scroll configuration separates exhaust pulses for improved turbo spool and efficiency. It enhances low-end torque and throttle response, especially in inline engines with paired firing cylinders.
Is the 0.91 A/R ratio good for high RPM power?
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Yes, the 0.91 A/R balances boost response and high-RPM flow, making it suitable for engines targeting 400-600 HP with strong mid-to-top-end performance.
Can I install this myself?
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If you have experience assembling turbos and machining housings, yes. It's not a bolt-on part—requires integration into a full turbo system with proper seals and alignment.
How much does S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty cost?
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S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty is $98.60 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty in stock at Lab Work Auto?
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Yes, S300S Turbo-66mm-T4-Twin Scroll-0.91 A/R Turbo Cartridge CHRA Lifetime Warranty is currently in stock at Lab Work Auto.
Specifications
- SKU
- F8-016983