V-TWIN 35-0048 Linkert Manifold El Kit

( Brand: V-twin ), ( Manufacturer Part Number: 35-0048 ), ( Part Type: Manifold ), ( Oe/oem Part Number: 503-35 ), ( Vintage Part: Yes )

Review V TWIN 61 Inch Linkert Manifold Kit Harley Davidson El fits 1936–1939

The **V-Twin 35-0048 61 Linkert Manifold Kit** for Harley-Davidson EL models from 1936 to 1939 is a meticulously crafted restoration and performance upgrade designed to breathe new life into one of the most iconic and mechanically sound eras of Harley-Davidson s classic V-Twin engines. This kit is a direct replacement for the original Linkert-style exhaust manifolds, which were a hallmark of Harley s early "Knucklehead" and "Flathead" engines, known for their distinctive, compact design and robust construction. Engineered to perfection, the 61 Linkert manifold kit features high-quality castings that replicate the classic contours and proportions of the original, ensuring an authentic look while incorporating modern refinements for improved durability and performance. The manifolds are precision-machined to maintain proper exhaust flow, reducing backpressure and allowing the engine to breathe more freely, which translates to better throttle response, smoother power delivery, and a more engaging exhaust note characteristic of the era s raw, unfiltered sound. Constructed from heat-treated steel, these manifolds are designed to withstand the thermal stresses of high-performance applications without warping or cracking, making them ideal for both showroom-ready restorations and track-oriented builds. The kit includes all necessary gaskets, studs, and hardware, ensuring a straightforward installation process that preserves the original engine bay layout while enhancing its functionality. Whether you're aiming to restore an EL to its original glory or push it beyond its classic limits, this manifold kit serves as a seamless bridge between vintage aesthetics and modern performance, embodying the spirit of Harley-Davidson s golden age of mechanical ingenuity.

### **Pros and Cons of Buying a V-Twin 35-0048 61 Linkert Manifold Kit for a Harley-Davidson EL (1936 1939)**

#### **Pros**

1. **Performance Improvement** The Linkert manifold is designed to enhance airflow and improve throttle response, particularly in the mid-range RPMs. This can make the engine feel more responsive and smoother, especially in a vintage Harley that may have stock manifolds showing signs of wear or inefficiency.

2. **Restoration and Authenticity** If you're restoring or maintaining an EL from the late 1930s, a Linkert manifold is a period-correct upgrade. These manifolds were used on some Harley-Davidson models of the era, particularly in racing and high-performance applications, adding authenticity to a custom or competition build.

3. **Durability and Quality** Linkert manifolds are known for their robust construction, often made from high-quality materials like cast iron or steel, which can withstand the stresses of high-performance use better than some aftermarket alternatives.

4. **Compatibility with Modifications** If you're also installing other performance upgrades (such as a hotter camshaft, larger carburetors, or a performance exhaust), the Linkert manifold can help optimize the engine s breathing, making those mods more effective.

5. **Aesthetic Appeal** The design of the Linkert manifold is distinctive and often considered more aggressive than stock Harley manifolds. For enthusiasts who prioritize both function and style, this can be a desirable upgrade.

6. **Potential for Increased Horsepower** In combination with other performance parts, the Linkert manifold can contribute to a modest power increase, especially if the original manifolds were restrictive or damaged.

7. **Ease of Installation** While installation requires some mechanical skill, the Linkert manifold is designed to fit standard EL engine configurations with minimal modifications, making it accessible for those with basic machining or welding experience.

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#### **Cons**

1. **Cost** A genuine Linkert manifold kit (especially for a 1936 1939 EL) can be expensive, particularly if sourced from a reputable seller or restored to original condition. The price may not be justified if you're not planning extensive modifications.

2. **Installation Complexity** Installing a Linkert manifold requires welding, machining, or at least precise fitting to ensure a proper seal with the cylinder heads and intake. If you lack experience with these tasks, you may need to hire a mechanic, adding to the cost.

3. **Limited Modern Support** Unlike more common aftermarket parts, Linkert manifolds are not as widely available or documented for modern Harley-Davidson engines. Finding parts, diagrams, or troubleshooting help may be more difficult than with contemporary upgrades.

4. **Potential for Overkill** If your EL is primarily used for cruising or light riding, the performance gains from a Linkert manifold may not be noticeable enough to justify the investment. Stock manifolds can still function adequately for casual use.

5. **Weight** Cast-iron manifolds can be heavier than some modern aftermarket alternatives, which might slightly affect handling or fatigue if you're frequently riding at high speeds.

6. **Compatibility Issues** While the 35-0048 61 Linkert manifold is designed for EL engines, there is a risk of fitment issues if the engine has been heavily modified (e.g., custom cylinder heads, non-standard carburetors, or altered valve angles). Thorough inspection and possibly custom machining may be required.

7. **Maintenance Considerations** The manifold s design may require more frequent inspection for cracks, leaks, or wear, especially if the engine sees heavy use. Poor-quality welds or casting defects could lead to failures over time.

8. **Resale Value Impact** If you plan to sell the bike in the future, a Linkert manifold may not appeal to all buyers, particularly those seeking stock or minimal-modification Harleys. The upgrade could deter some collectors or traditionalists.

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### **Conclusion**

The **V-Twin 35-0048 61 Linkert manifold kit** is a compelling upgrade for Harley-Davidson EL owners who prioritize **performance, authenticity, and a vintage racing aesthetic**. It offers measurable improvements in airflow and throttle response, making it ideal for enthusiasts who want to push their bike s limits while staying true to its era. However, the **high cost, installation challenges, and limited modern support** make it less suitable for casual riders or those on a tight budget.

If your primary goal is **restoration, competition use, or a high-performance build**, the Linkert manifold is a worthwhile investment. For **daily cruising or stock-like riding**, the benefits may not outweigh the drawbacks, and a simpler (or no) manifold upgrade could be more practical.

---

### **Recommendation**

- You are restoring or building a **high-performance EL** for racing, track days, or aggressive riding.

- You have **mechanical experience** (or access to a skilled mechanic) to install it properly.

- You value **vintage authenticity** and are willing to invest in period-correct upgrades.

- You plan to pair it with **other performance mods** (camshaft, carburetors, exhaust) to maximize gains.

- Your EL is primarily a **daily rider** or used for casual cruising.

- You lack the **budget or skills** for installation and potential custom machining.

- You prefer **minimal modifications** and want to preserve the bike s original character.

- You re unsure whether the performance gains will justify the cost.

For most EL owners, the Linkert manifold is a **specialized upgrade** best suited to enthusiasts with specific goals. If you re unsure, consider testing a **less expensive aftermarket manifold** or consulting with a vintage Harley restoration expert before committing.

Details:

This kit includes nickel plated manifold, pauperized nuts and 2 brass seals. EL 1936-1939. Original 3 bolt design for Knucklehead 61 model's. 61 Linkert manifold kit features the Baby Butt 3 bolt style, cast as original.

part #: 350048 prices

• $221.10-$222.99

specifications intakefuelmotorcycle:

• for makes: Harley, Davidson
• for years: 1936-1939
• brand: V-twin
• mpn: 35-0048
• part type: Manifold
• oe/oem part number: 503-35
• vintage part: Yes

general intakefuelmotorcycle:

• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

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• # reviews: 420
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• city: Colorado Springs, Colorado

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• quantity: 1
• started: February 11, 2026
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