JAGUAR XR83-6C064-AD Engine XK8 4.0L AJ27 V8 163K

( Manufacturer Part Number: XR83-6C064-AD ), ( Type: Direct Replacement ), ( Oe/oem Part Number: Oem ), ( California Prop 65 Warning: Motor Vehicles California Requires The Following Notice, Oils And Fluids, Battery Posts, Terminals And Related Accessories Which Contain Lead And Lead Compounds And Other Chemicals Known To The State Of California To Cause Cancer, Birth Defects And Other Reproductive Harm. These Chemicals Are Found In Vehicles, Vehicle Parts And Accessories, Both New And As Replacements. When Being Serviced, These Vehicles Generate Used Oil, Waste Fluids, Grease, Fumes And Particulates, All Known To The State Of California To Cause Cancer, Birth Defects, And Reproductive Harm. )

Review JAGUAR Oem Xk8 S type Engine Assembly 4.0l V8 163k fits XJ8 1999–2003

The **Jaguar XR8 (3.0L AJ-V8, AJ27) and XK8/XJ8/S-Type 4.0L V8 (C064AD) from model years 1999 to 2003** represents a pinnacle of British automotive engineering, blending timeless elegance with cutting-edge performance and luxury. Engineered under Jaguar s legendary **XJ8 platform**, this 4.0-liter, **DOHC 32-valve AJ27 V8** is a masterpiece of precision, producing a smooth yet exhilarating **282 horsepower** (in its base form) and **300 lb-ft of torque**, all delivered through a refined **ZF 6-speed automatic transmission** or, in the case of the XR8, a **5-speed manual** for purists. The AJ27 s **aluminum block and cylinder heads**, paired with **multi-port fuel injection**, ensure a harmonious balance of power and efficiency, while its **variable valve timing (VVT)** enhances both responsiveness and fuel economy a rare feat in a high-performance V8 of its era. The engine s **smooth, linear power delivery** and **distinctive growl** make it instantly recognizable, embodying Jaguar s signature blend of sophistication and raw driving excitement.

Beneath the polished, handcrafted exterior whether it s the **XR8 s aggressive fastback silhouette**, the **XK8 s convertible elegance**, the **XJ8 s timeless sedan grace**, or the **S-Type s sportier coupe styling** lies a **rigid, multi-tubular steel chassis** with **pneumatic suspension** (in later models) that adapts seamlessly to road imperfections while maintaining a near-luxury ride quality. The **front-engine, rear-wheel-drive layout** ensures a classic driving experience, with precise steering and a **balanced weight distribution** that rewards the driver with engaging handling. Optional **stability control** (in later years) further refined its already impressive cornering capabilities, making it a versatile grand tourer capable of effortlessly transitioning from city cruising to spirited highway overtakes.

Inside, the cabin is a **masterclass in British luxury**, featuring **full-leather upholstery**, **hand-stitched stitching**, and **premium wood and aluminum trim** that exudes understated opulence. The **power-adjustable seats**, **heated and ventilated options**, and **dual-zone climate control** cater to both comfort and performance, while the **wooden shift knob** (on automatics) and **manual transmission s precise gearchange** add to the driving experience s refinement. The **infotainment system**, though basic by modern standards, includes **CD, AM/FM radio, and auxiliary inputs**, complemented by **Bose or optional premium audio** for an immersive listening experience. Even the **ambient lighting** and **heated mirrors** contribute to an atmosphere of effortless luxury, making every journey feel like an indulgence.

Under the hood, the **4.0L AJ27 V8** is not just a powerplant but a **statement of engineering prowess**. Its **long-stroke design** (3.26-inch bore, 3.66-inch stroke) ensures a deep, resonant exhaust note, while the **forged crankshaft and connecting rods** guarantee durability and reliability qualities that have made this engine a favorite among enthusiasts for aftermarket tuning. The **ZF 6HP26 automatic transmission** (or the **5-speed manual in XR8s**) is a **smooth, precise unit** with **lockup torque converter** and **adaptive shift logic**, ensuring seamless power delivery whether cruising at highway speeds or accelerating from a standstill. For those seeking even more performance, the **XR8 s 5-speed manual** offers a **direct, engaging driving experience**, with a **close-ratio gearbox** that turns the AJ27 into a **true driver s engine**.

Externally, the **1999 2003 Jaguar lineup** (XR8, XK8, XJ8, and S-Type) features a **distinctive, angular yet refined design language** that sets it apart from its contemporaries. The **XR8 s fastback roofline** and **aerodynamic bodywork** reduce drag while maintaining a sporty stance, while the **XK8 s convertible top** (with **electric or manual operation**) transforms it into a **summer s dream**, its **retractable hardtop** adding an extra layer of sophistication. The **XJ8 s classic sedan silhouette** and the **S-Type s coupe-like proportions** ensure timeless appeal, with **optional alloy wheels** (including **five-spoke or multi-spoke designs**) and **chrome accents** enhancing their premium aesthetic. Whether adorned with **blacked-out trim**, **clear-coat paint**, or **two-tone schemes**, these Jaguars command attention with a **regal presence** that transcends mere transportation.

For the discerning owner, the **1999 2003 Jaguar V8 lineup** offers a **perfect marriage of heritage and modernity**, blending **British craftsmanship with advanced engineering**. The **AJ27 4.0L V8** is not only a **powerhouse** but also a **reliable, tunable engine** with a **legendary reputation** for longevity, making it a **wise investment** for those seeking both **performance and enduring value**. Whether navigating twisty roads, cruising along coastal highways, or making a statement at a weekend gathering, this Jaguar delivers an **unmatched driving experience** one that combines **luxury, power, and timeless elegance** in a way few automobiles can match. From the **deep-throated growl of the V8** to the **butter-smooth ride**, every aspect of this engineering masterpiece reflects Jaguar s commitment to **excellence in automotive design and performance**.

### **Pros and Cons of Buying a Jaguar XKR (XR8, XK8, XJ8, S-Type) with the AJ27 4.0L V8 (1999 2003)**

#### **Pros**

1. **Power and Performance**

The AJ27 4.0L V8 is a naturally aspirated engine known for its strong low-end torque and smooth power delivery. In its stock form, it produces around **300 320 hp** (depending on the model year and tuning), which was impressive for its time. With aftermarket upgrades (intake, exhaust, ECU tuning), it can easily exceed **400 hp**, making it a capable performance engine for its class.

2. **Reliability (Compared to Other Jaguar Engines)**

While not bulletproof, the AJ27 is generally more reliable than earlier Jaguar V8s (like the AJ-V8 in the XJ40) or later ones (like the AJ-V8 in the XKR-F). Common issues like oil leaks and head gasket failures are manageable with proper maintenance. Many AJ27s last **150,000 250,000 miles** with regular upkeep.

3. **Classic Jaguar Driving Experience**

These models (XKR, XK8, XJ8, S-Type) offer a **luxurious, sporty, and engaging** driving experience. The manual transmission (if available) and the V8 s growl make them enjoyable to drive, especially on winding roads.

4. **Aftermarket Support**

The AJ27 has a **large aftermarket community**, with readily available parts for tuning, suspension upgrades, and engine modifications. Performance companies like **Jaguar Performance, Supercharger Systems, and individual tuners** have optimized the engine for higher power.

5. **Potential for Restoration and Customization**

If you enjoy working on cars, these Jaguars are **great projects**. The body styles (XKR, XK8, XJ8) are iconic, and with some effort, they can be restored to showroom condition. The AJ27 can also be **supercharged or turbocharged** for significant power gains.

6. **Good Value for Enthusiasts**

Compared to modern luxury sports sedans, these Jaguars are **affordable to buy and maintain** (if you re willing to put in work). A well-maintained example can be found for **$10,000 $30,000**, depending on condition and rarity.

7. **Classic Jaguar Prestige**

Owning a Jaguar from this era carries **nostalgic appeal** and a sense of exclusivity. The XKR, XK8, and S-Type were high-end cars in their day, and they still hold a certain charm today.

---

#### **Cons**

1. **Maintenance and Reliability Issues**

- **Oil Leaks:** Common from **valve cover gaskets, oil pan gaskets, and rear main seal leaks**.

- **Head Gasket Failures:** If the engine overheats or is neglected, head gaskets can blow, leading to **coolant mixing with oil** and potential catastrophic failure.

- **Timing Chain Stretch:** Some AJ27s develop **timing chain stretch**, requiring a **timing chain tensioner and guide replacement** ( $1,500 $2,500).

- **Suspension Wear:** The **coilover shocks and bushings** wear out quickly, requiring frequent replacements for a smooth ride.

- **Electrical Gremlins:** Jaguars from this era are known for **faulty wiring, sensor issues, and unreliable electronics** (e.g., ABS, traction control).

2. **High Maintenance Costs**

- **Labor costs** for Jaguar repairs are often **higher than average** due to specialized tools and parts.

- **OEM parts** can be expensive, though aftermarket options exist.

- **Transmission issues** (especially in the **ZF 5-speed automatic**) can be costly to repair.

3. **Fuel Economy**

The AJ27 is **not fuel-efficient**, averaging **12 15 MPG combined**. This can add up over time, especially if you drive frequently.

4. **Rust and Body Condition**

Many of these cars (especially XJ8s and S-Types) suffer from **rust in critical areas** (wheel wells, sills, undercarriage). A **full rust treatment** can be expensive.

5. **Depreciation and Market Value**

While they hold value better than some contemporaries, they **do not appreciate** like modern performance cars. If you plan to sell later, you may not recoup much.

6. **Driving Quirks**

- **Poor steering feel** (especially in the XJ8 and S-Type).

- **Soft suspension** (unless modified), making them feel **plush rather than sporty**.

- **Braking issues** (weak stock brakes, especially on the XKR).

7. **Parts Availability and Scarcity**

- Some **original parts** (especially for older models) are **discontinued or hard to find**.

- **Replacement body panels** (e.g., hoods, fenders) can be expensive or require custom fabrication.

---

### **Ending Conclusion**

- **Enjoy working on cars** and don t mind **regular maintenance**.

- **Value driving experience** over modern convenience.

- **Want a powerful, naturally aspirated V8** with **aftermarket potential**.

- **Appreciate classic Jaguar styling** and the **prestige of owning one**.

- **Casual drivers** who want a **low-maintenance, reliable daily**.

- **Those unwilling to spend money on repairs** (especially timing chain, suspension, and electrical issues).

- **People who prioritize fuel efficiency and modern tech**.

If you **inspect the car thoroughly** (check for leaks, rust, engine condition, and transmission health) and **budget for maintenance**, an AJ27 Jaguar can be a **rewarding and enjoyable** project car or a **fun weekend driver**.

---

### **Final Recommendation**

You **love Jaguars and the AJ27 s character**.

You re **prepared for maintenance** (oil changes, timing chain, suspension, electrical fixes).

You **plan to modify it** (tune, supercharge, or restore it).

You **find a well-documented example** with **service records** and **no major rust or engine issues**.

You **need a reliable daily driver** with minimal upkeep.

You **can t afford unexpected repairs** (budget **$2,000 $5,000/year** for maintenance).

You **prefer modern comforts** (better tech, better safety, better fuel economy).

- **Get a pre-purchase inspection** (especially for **engine condition, transmission, and rust**).

- **Check for service records** (oil changes, timing chain, head gasket work).

- **Consider a manual transmission** (if available) for better driving engagement.

- **Budget for a full restoration** if buying a project car.

If you **love the AJ27 s sound, power, and Jaguar heritage**, it can be a **fantastic investment in passion and enjoyment**. If you **prioritize reliability and low hassle**, look elsewhere.

Details:

97-03 OEM JAGUAR XK8 Assay Engine XR83-6C064-AD.

part #: xr836c064 prices

• $299.50-$3490.00

specifications cylinderheapar:

• for models: Xj8
• for makes: Jaguar
• for years: 1999-2003
• mpn: Xr83-6c064-ad
• type: Direct Replacement
• oe/oem part number: Oem
• california prop 65 warning: Motor Vehicles California Requires The Following Notice, Oils And Fluids, Battery Posts, Terminals And Related Accessories Which Contain Lead And Lead Compounds And Other Chemicals Known To The State Of California To Cause Cancer, Birth Defects And Other Reproductive Harm. These Chemicals Are Found In Vehicles, Vehicle Parts And Accessories, Both New And As Replacements. When Being Serviced, These Vehicles Generate Used Oil, Waste Fluids, Grease, Fumes And Particulates, All Known To The State Of California To Cause Cancer, Birth Defects, And Reproductive Harm.

seller cylinderheapar:

• # reviews: 218
• city: Murrieta, California
• rating: 100.0%

payments cylinderheapar:

• wallet: Paypal
• other
• credit card: Diners-club

offer cylinderheapar:

• sold: 0
• quantity: 1
• best offers: True
• availability: In Stock
• started: May 18, 2026
• options: Ship-to-home

returns cylinderheapar:

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

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

shipping cylinderheapar:

• type: Fixed
• class: Freight
• service: Flat Rate Freight
• cost: $495.00

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