ARCTIC CAT 1603-995 Shock Shaft Od Nos .498 9.450

( Brand: Arctic Cat ), ( Manufacturer Part Number: 1603-995 ), ( Part Type: Shock Shaft )

Review ARCTIC CAT Oem Shock Shaft .498 Od 9.450 Nos fits 450

The **Arctic Cat 1603-995 Shock Shaft** is a premium, high-performance drive shaft designed specifically for Arctic Cat snowmobiles, offering unmatched durability, precision engineering, and reliability in the most demanding winter conditions. This **9.450-inch outer diameter (OD) shaft**, part number **1603-995**, is engineered to deliver seamless power transfer from the transmission to the track, ensuring optimal performance whether cruising across open terrain or tackling deep powder. Constructed from high-grade, heat-treated steel, the shaft features a robust **shock-absorbing design** that minimizes vibration and wear, extending both the life of the shaft and the surrounding drivetrain components. Its **precision-machined splines** and **sealed bearings** provide smooth operation while resisting corrosion from salt, slush, and moisture critical for maintaining peak performance in harsh Arctic environments. The **universal compatibility** of this shaft makes it an ideal replacement for stock units, reducing the risk of drivetrain failure and ensuring a consistent, powerful ride. Whether used in classic models or heavily modified machines, the **1603-995** stands as a testament to Arctic Cat s commitment to engineering resilience without sacrificing performance, making it a must-have upgrade for serious riders seeking reliability and efficiency in every outing.

### **Pros and Cons of buying a Arctic Cat 1603-995 Shock Shaft 498 OD (9.450" OD, NOS)**

#### **Pros**

1. **High Performance Engine**

The Arctic Cat 1603-995 features a **3.5L V8 engine** with **995 cc displacement**, producing strong torque and reliable power. This engine is known for its durability and ability to handle heavy loads, making it suitable for towing, hauling, and off-road use.

2. **Shock Shaft Design**

The **shock shaft (also called a driveshaft with a shock absorber)** reduces vibration and stress on the drivetrain, improving ride comfort and longevity. This is particularly beneficial for long-distance travel or rough terrain where excessive vibration can damage components.

3. **New Old Stock (NOS) Condition**

Being **NOS (New Old Stock)**, this engine is in **like-new condition** but has been stored rather than brand new. This means it avoids the risk of shipping damage or wear from initial distribution. It s a cost-effective way to get a high-quality, pre-owned part without the uncertainty of used units.

4. **Compatibility with Arctic Cat Models**

The **498 OD (Outside Diameter)** and **9.450" OD** specifications suggest it fits Arctic Cat vehicles like the **ZR4, ZR4X, or other high-performance models** with similar drivetrain setups. Proper fitment ensures reliability and optimal performance.

5. **Proven Reliability**

Arctic Cat engines are well-regarded for their **durability and performance** in snowmobiles, ATVs, and some off-road vehicles. The shock shaft design further enhances reliability by reducing mechanical stress.

6. **Potential for Customization**

If you re working on a **restoration or modification project**, a NOS shock shaft engine allows for precise upgrades without the risk of compatibility issues from aftermarket parts.

7. **Resale Value**

Since Arctic Cat parts, especially NOS units, retain value well, this engine could be easier to resell in the future compared to heavily used or modified components.

---

#### **Cons**

1. **High Initial Cost**

NOS engines are **more expensive than used or rebuilt units** due to their near-new condition. If budget is a concern, this may be a significant upfront investment.

2. **Limited Availability**

Arctic Cat parts, especially NOS shock shaft units, may not be as widely available as more common engine types. You may need to **source from specialty dealers or online marketplaces**, which could extend lead times.

3. **Potential for Storage Issues**

Even though it s NOS, long-term storage can sometimes lead to **minor wear on seals, gaskets, or minor corrosion** if not properly maintained. A thorough inspection is recommended before purchase.

4. **Installation Complexity**

Installing a shock shaft requires **specialized knowledge and tools**, especially if you re not experienced with drivetrain work. Improper installation could lead to **vibration issues, premature wear, or even drivetrain failure**.

5. **Compatibility Risks**

While the **498 OD and 9.450" OD** suggest a good fit, **exact dimensions must match your vehicle s drivetrain setup**. Mismatches could cause **clearance issues, binding, or damage** to surrounding components.

6. **No Warranty (Unless Purchased from Authorized Dealer)**

NOS parts typically come with **no warranty**, meaning you bear full responsibility for any defects or failures post-purchase. Always verify the seller s return policy.

7. **Market Demand Fluctuations**

Arctic Cat parts, especially for older or niche models, can **appreciate or depreciate in value** based on demand. If you plan to sell later, market conditions may affect resale value.

---

### **Conclusion & Recommendation**

The **Arctic Cat 1603-995 Shock Shaft 498 OD (9.450" OD) NOS** is a **high-quality, reliable engine** with a **shock shaft design** that enhances durability and ride comfort. It is ideal for **enthusiasts restoring Arctic Cat vehicles, those needing a premium pre-owned engine, or off-road applications where vibration reduction is beneficial**.

#### **Who Should Buy It?**

**Restoration projects** If you re rebuilding an Arctic Cat ZR4, ZR4X, or similar model, this NOS unit provides a **clean, high-performance engine** with minimal risk of hidden damage.

**Off-road & towing applications** The shock shaft reduces stress on the drivetrain, making it suitable for **heavy-duty use**.

**Investors & collectors** If you value **brand reputation and resale potential**, this is a solid long-term purchase.

**DIYers with mechanical experience** If you re comfortable with **drivetrain work**, the installation can be rewarding.

#### **Who Should Avoid It?**

**Budget-conscious buyers** If cost is a major concern, a **rebuilt or used engine** from a trusted source may be a better alternative.

**Beginners in engine/drivetrain work** Installation requires **specialized knowledge**; improper fitting could void benefits.

**Those needing immediate availability** NOS parts may take longer to source compared to mass-produced aftermarket options.

**Vehicles with modified drivetrain setups** If your vehicle has **custom shaft lengths or angles**, compatibility may not be guaranteed.

#### **Final Recommendation**

**If you have the budget, need a reliable NOS engine for an Arctic Cat vehicle, and are prepared for potential installation challenges, this is an excellent purchase.** However, **verify exact fitment with your vehicle s drivetrain specifications** before buying, and consider having a **mechanic inspect it** to ensure no hidden issues.

- **Buy from a reputable dealer** (preferably Arctic Cat authorized or a trusted specialty shop).

- **Confirm all dimensions (OD, shaft length, yoke fitment)** match your vehicle.

- **Budget for professional installation** if you lack experience.

- **Check for any signs of wear** (seals, bearings, corrosion) before finalizing the purchase.

If these conditions are met, the **Arctic Cat 1603-995 Shock Shaft NOS** will be a **valuable and long-lasting upgrade** for your machine.

Details:

All parts are in stock and ready to ship. Shock Shaft .498 OD x 9.450 is new and in excellent condition, original packaging. Items are shipped using USPS, UPS, and FedEx. OEM Arctic Cat 1603-995 Shock Shaft .498 OD x 9.450 NOS.

If the original package is included it may show signs of wear. Pictures: Thumbnails.

part #: 1603995 prices

• $49.94-$69.89

specifications snowmobileshocksoi:

• for models: 450
• for makes: Arctic-cat, Arctic
• brand: Arctic Cat
• mpn: 1603-995
• part type: Shock Shaft

payments snowmobileshocksoi:

• other
• credit card: Mastercard
• wallet: Apple-pay

shipping snowmobileshocksoi:

• carrier: USPS, UPS
• type: Calculated
• class: Standard, Expedited, One-day
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air
• cost: $0.00
• transit: 5-11 Days

returns snowmobileshocksoi:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

seller snowmobileshocksoi:

• city: Ashaway, Rhode Island
• rating: 99.9%
• # reviews: 128585

offer snowmobileshocksoi:

• availability: In Stock
• sold: 0
• quantity: 1
• started: February 28, 2026
• best offers: True
• options: Ship-to-home

general snowmobileshocksoi:

• Parts Accessories > Snowmobile Parts > Shocks Suspension
• condition: New

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