If you require specific gaskets or mounting solutions for different engine variants or vehicle applications, we also support OEM/ODM customization based on your assembly or branding needs.
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Heavy‑Duty Intake Manifold Kit for Jeep YJ 4.0L
| Application Scenarios:Engineered for Jeep Wrangler YJ 1991–1995 with 4.0L engines, suited for performance tuning, OEM replacement, and industrial engine applications. Manufacturing Processes:Made from corrosion-resistant stainless steel; CNC port machining, mandrel forming, and TIG welding ensure dimensional accuracy and structural strength. Features:Heat-resistant, smooth intake flow, reinforced flanges, and long-term durability in demanding environments. Customization:Supports OEM/ODM: custom port size, flange designs, finish options, and bulk packaging tailored to client requirements. | |||||||||
Product Introduction
This stainless steel intake manifold kit is designed specifically for the 4.0 L inline-six Jeep Wrangler YJ (1991–1995). Manufactured with precision CNC machining and TIG welding, the assembly delivers tight tolerance, corrosion resistance, and improved airflow over stock manifolds.
As an industrial solution for performance shops or aftermarket distributors, this kit supports OEM-level performance with the added robustness needed for high-demand environments. Thinking beyond the Jeep YJ enthusiast market, manufacturing partners can integrate this manifold into rebuild kits or performance lineups.
Features & Benefits
The manifold' precision-crafted ports improve airflow efficiency, reducing turbulence and enhancing throttle response. The stainless steel construction withstands high heat cycles and resists corrosion, ensuring longevity — qualities essential for performance applications, fleet service vehicles, or custom Jeep builds.
Flanges are thickened and fully machined for proper sealing. This manifold is suitable for integration with related parts like throttle bodies or intake plenum systems commonly supplied in industrial kits.
In addition to the stainless steel exhaust manifold itself, this kit includes all necessary mounting and sealing accessories to streamline installation and ensure proper long-term performance. Each component is carefully selected or custom-manufactured to meet the same durability and dimensional accuracy standards as the manifold.
The multi-layer metal (MLS) exhaust gaskets are designed to maintain a reliable seal under thermal expansion and vibration, reducing the risk of exhaust leaks and noise. These gaskets match OEM port geometry and are compatible with both stock and aftermarket cylinder heads.
The spring-loaded bolts and studs allow for controlled expansion and contraction of the exhaust assembly, minimizing stress on the manifold flange and ensuring consistent pressure on the sealing surfaces. These hardware components are made from heat-treated steel with corrosion-resistant coating for extended durability in high-heat environments.
The U-shaped exhaust support bracket adds mechanical stability to the lower exhaust connection, helping prevent fatigue or cracking at connection points. This bracket is pre-bent and sized for the Jeep YJ platform, making it a drop-in solution during installation.
Together, these components provide a complete bolt-on system for 1991–1995 Jeep Wrangler YJ exhaust manifold upgrades, making the product suitable not just for retail replacements, but also for B2B bulk integration into engine rebuild kits, performance upgrade packages, or fleet repair operations.
Technical Specs Table
| Specification | Details |
|---|---|
| Vehicle Fitment | Jeep Wrangler YJ 1991–1995 (4.0 L) |
| Material | 304 Stainless Steel |
| Port Machining | CNC-ported to stock or enlarged sizes |
| Welding Type | TIG welding full seams |
| Flange Fitment | OEM bolt pattern for 4.0 L intake |
| Finish Options | Brushed or polished |
| Packaging | Bulk cartons with foam inserts or OEM packaging |
| Min. Order Quantity | Negotiable for industrial orders |
| Customization Options | Port size, finish, flange thickness |
FAQs
Q: Is this intake manifold compatible with EFI systems?
Yes, it retains the stock throttle-body interface and vacuum ports, making it EFI-compatible without modification.
Q: Can you supply custom port sizes?
Yes. We offer CNC porting services per customer specs, ideal for high-flow tuning applications.
Q: Are custom finishes available?
Yes. You can choose polished, brushed, or bead-blasted finishes depending on your project requirements.
Q: Do you offer related components like throttle bodies or gaskets?
Yes, we can bundle with throttle-body adapters, gasket kits, or intake plenum components for complete assembly packages.
Product Introduction
This stainless steel intake manifold kit is designed specifically for the 4.0 L inline-six Jeep Wrangler YJ (1991–1995). Manufactured with precision CNC machining and TIG welding, the assembly delivers tight tolerance, corrosion resistance, and improved airflow over stock manifolds.
As an industrial solution for performance shops or aftermarket distributors, this kit supports OEM-level performance with the added robustness needed for high-demand environments. Thinking beyond the Jeep YJ enthusiast market, manufacturing partners can integrate this manifold into rebuild kits or performance lineups.
Features & Benefits
The manifold' precision-crafted ports improve airflow efficiency, reducing turbulence and enhancing throttle response. The stainless steel construction withstands high heat cycles and resists corrosion, ensuring longevity — qualities essential for performance applications, fleet service vehicles, or custom Jeep builds.
Flanges are thickened and fully machined for proper sealing. This manifold is suitable for integration with related parts like throttle bodies or intake plenum systems commonly supplied in industrial kits.
In addition to the stainless steel exhaust manifold itself, this kit includes all necessary mounting and sealing accessories to streamline installation and ensure proper long-term performance. Each component is carefully selected or custom-manufactured to meet the same durability and dimensional accuracy standards as the manifold.
The multi-layer metal (MLS) exhaust gaskets are designed to maintain a reliable seal under thermal expansion and vibration, reducing the risk of exhaust leaks and noise. These gaskets match OEM port geometry and are compatible with both stock and aftermarket cylinder heads.
The spring-loaded bolts and studs allow for controlled expansion and contraction of the exhaust assembly, minimizing stress on the manifold flange and ensuring consistent pressure on the sealing surfaces. These hardware components are made from heat-treated steel with corrosion-resistant coating for extended durability in high-heat environments.
The U-shaped exhaust support bracket adds mechanical stability to the lower exhaust connection, helping prevent fatigue or cracking at connection points. This bracket is pre-bent and sized for the Jeep YJ platform, making it a drop-in solution during installation.
Together, these components provide a complete bolt-on system for 1991–1995 Jeep Wrangler YJ exhaust manifold upgrades, making the product suitable not just for retail replacements, but also for B2B bulk integration into engine rebuild kits, performance upgrade packages, or fleet repair operations.
If you require specific gaskets or mounting solutions for different engine variants or vehicle applications, we also support OEM/ODM customization based on your assembly or branding needs.
Technical Specs Table
| Specification | Details |
|---|---|
| Vehicle Fitment | Jeep Wrangler YJ 1991–1995 (4.0 L) |
| Material | 304 Stainless Steel |
| Port Machining | CNC-ported to stock or enlarged sizes |
| Welding Type | TIG welding full seams |
| Flange Fitment | OEM bolt pattern for 4.0 L intake |
| Finish Options | Brushed or polished |
| Packaging | Bulk cartons with foam inserts or OEM packaging |
| Min. Order Quantity | Negotiable for industrial orders |
| Customization Options | Port size, finish, flange thickness |
FAQs
Q: Is this intake manifold compatible with EFI systems?
Yes, it retains the stock throttle-body interface and vacuum ports, making it EFI-compatible without modification.
Q: Can you supply custom port sizes?
Yes. We offer CNC porting services per customer specs, ideal for high-flow tuning applications.
Q: Are custom finishes available?
Yes. You can choose polished, brushed, or bead-blasted finishes depending on your project requirements.
Q: Do you offer related components like throttle bodies or gaskets?
Yes, we can bundle with throttle-body adapters, gasket kits, or intake plenum components for complete assembly packages.
YUEDING EXHAUST
As one of China's leading exhaust flexible components manufacturers, YDCT focuses on helping you get the right parts that fit your project, whether for automotive systems or industrial equipment. We produce a complete range of stainless steel flex pipes, metal bellows, expansion joints, and exhaust clamps, all designed for durability and easy installation. More importantly, we can customize each order to match your needs — from OEM logo marking and material options to color selection and drawing-based production with reasonable MOQ. You tell us what you need, and we’ll make sure every piece arrives ready to perform, with the quality and consistency you expect.
Global Shipping & Payment Flexibility
We ship worldwide with EXW, FOB, or CIF terms, and support safe payment methods like T/T, PayPal, and L/C — flexible for different order sizes.
Factory-Direct Reliability
We make most products in our own factory and work closely with reliable partners for others, so every shipment meets the same level of quality.
Wholesale Pricing for Bulk Orders
We offer competitive factory prices for bulk orders and provide OEM solutions to match your brand and technical requirements.
