STANDARD MOTOR PRODUCTS 18RJXNGN Trunk Lock
fits model: Park. make: Buick. year: 1991–1996.
( Brand: Standard Motor Products ), ( Manufacturer Part Number: 18RJXNGN ), ( Part Type: Trunk Lock Motor ), ( Compatible Make/model: Buick Park Avenue ), ( Compatible Years: 1995 1991 1992 1993 1994 1996 95 91 92 93 94 96 ), ( Fitment Info: Trunk Lock With Chrome Finish ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )
Review STANDARD MOTOR PRODUCTS Trunk Lock Buick Avenue fits PARK 1991–1996
The **Standard Motor 18RJXNGN Trunk Lock** is a high-quality, direct-fit replacement designed specifically for the **Buick Park Avenue models produced between 1991 and 1996**, ensuring seamless integration with the vehicle s original trunk lock mechanism. Engineered with precision, this lock features a durable **stainless steel construction**, providing superior resistance to corrosion and wear, which is particularly beneficial for vehicles exposed to harsh weather conditions or salt-treated roads. The mechanism operates smoothly with minimal effort, thanks to its **self-lubricating components**, reducing friction and preventing premature failure. This trunk lock is compatible with the **1991-1996 Buick Park Avenue s trunk latch system**, including both manual and power trunk options, ensuring a perfect fit without the need for modifications. Its **reliable spring tension** guarantees consistent performance, whether the trunk is frequently opened and closed or left in a stationary position for extended periods. The design also incorporates a **secure latch mechanism**, preventing accidental disengagement, which enhances both convenience and safety. Whether you're restoring a classic Buick Park Avenue or maintaining an older model, this trunk lock offers a dependable, long-lasting solution that restores functionality and aesthetic integrity to your vehicle s rear compartment. Built to meet or exceed OEM standards, it is an excellent choice for enthusiasts and owners seeking a durable, easy-to-install replacement part.
### **Pros and Cons of Buying a 1991-1996 Buick Park Avenue with a Standard Motor 18RJXNGN Trunk Lock**
#### **Pros**
1. **Reliability of the Engine and Transmission**
The **3.8L V6 (L36) engine** in the Buick Park Avenue (1991 1996) is known for its durability, especially when properly maintained. It is a robust powerplant that can last well over 200,000 miles with regular upkeep. The **4T60-E automatic transmission** (common in this era) is also a well-regarded unit, though it requires proper fluid changes and occasional attention to solenoids.
2. **Comfort and Ride Quality**
The Park Avenue was designed as a full-size luxury sedan, offering a smooth, quiet ride with good suspension tuning. The spacious interior, power seats, and available leather upholstery make it a comfortable choice for long drives.
3. **Availability of Parts and Mechanics**
Being a mid-1990s Buick, parts are still relatively accessible, though not as widely available as on newer vehicles. Many classic car mechanics and general auto shops are familiar with GM s 1990s architecture, making repairs more straightforward than on obscure or very old vehicles.
4. **Potential for Customization and Modifications**
The 3.8L V6 can be tuned for better performance, and the body style allows for cosmetic upgrades (custom paint, wheels, interior refinishing). Some owners enjoy restoring these cars to showroom condition.
5. **Lower Running Costs Compared to Modern Luxury Sedans**
Fuel efficiency is modest (around 16 18 MPG combined), but it is far cheaper than running a modern luxury sedan. Insurance and maintenance costs are also lower than those of newer high-end vehicles.
6. **Classic Appeal and Collectibility**
The Buick Park Avenue, especially in later model years (1994 1996), has a distinct luxury appeal. Some well-maintained examples are sought after by enthusiasts, which could increase resale value over time if preserved properly.
7. **Standard Trunk Lock (18RJXNGN) Convenience**
The trunk lock mechanism being standard means you don t have to worry about aftermarket replacements or compatibility issues. While not a major selling point, it ensures the car functions as intended without extra modifications.
---
#### **Cons**
1. **Aging Suspension and Wear Issues**
The suspension components (shocks, struts, bushings) in these vehicles can degrade over time, leading to a rougher ride or handling concerns. Replacing worn parts is often necessary to maintain comfort and safety.
2. **Transmission and Drivetrain Reliability Concerns**
While the 4T60-E transmission is durable, it is prone to failure if fluid is not changed regularly (typically every 30,000 50,000 miles). Solenoid and valve body issues can arise, requiring costly repairs if neglected. The rear differential may also need attention if the vehicle has high mileage.
3. **Electrical System Quirks**
GM s 1990s electrical systems can be finicky, with issues like intermittent power window failures, faulty sensors, or alternator problems. The trunk lock mechanism itself may require occasional lubrication or replacement of worn components.
4. **Fuel Economy Limitations**
The 3.8L V6 is not fuel-efficient by modern standards, averaging around **16 18 MPG combined**. This can add up in cost over time, especially if the car is driven frequently.
5. **Rust Concerns (Especially in Snowy or Coastal Areas)**
Older Buicks are notorious for rust, particularly in the wheel wells, rocker panels, and undercarriage. A thorough inspection of the chassis and body panels is critical before purchasing.
6. **Maintenance Costs Can Add Up**
While parts are available, labor costs for repairs (especially on older vehicles) can be higher than on newer cars. Routine maintenance (timing belt, spark plugs, fluid changes) is essential to prevent major failures.
7. **Resale Value Depends on Condition**
The Park Avenue s resale value is modest unless it is in excellent condition or has collector appeal. Most buyers are looking for reliable daily drivers, so a well-documented history and low mileage will help.
8. **Limited Modern Safety Features**
These vehicles lack modern safety features like stability control, advanced airbag systems, or electronic stability control. While they are not inherently unsafe, they may not meet today s crash-test standards.
---
### **Conclusion**
The **1991 1996 Buick Park Avenue with a standard trunk lock (18RJXNGN)** is a **solid choice for buyers who prioritize comfort, reliability, and classic luxury** provided the vehicle has been well-maintained. It offers a **smooth ride, durable engine, and a spacious interior**, making it ideal for those who enjoy driving a larger, more traditional sedan without the complexity of a modern luxury car.
However, **potential buyers should be prepared for higher maintenance costs, aging suspension components, and the need for regular transmission fluid changes**. Rust, electrical quirks, and fuel efficiency are also factors to consider. If you find a **low-mileage example with a clean service history**, this Buick can be an excellent **daily driver or a project car** for enthusiasts.
---
### **Recommendation**
**Buy if:**- You want a **comfortable, spacious luxury sedan** with a **reliable V6 engine**.
- You are **willing to invest in maintenance** (transmission fluid, suspension, rust repairs).
- You prefer **classic styling** over modern tech and don t mind slightly lower fuel economy.
- The car has **low miles (under 150,000) and a documented service record**.
**Avoid if:**- You need **high fuel efficiency or modern safety features**.
- You dislike **regular maintenance tasks** (fluid changes, suspension checks).
- The vehicle shows **signs of rust, transmission slippage, or electrical issues**.
- You want a **low-cost, hassle-free** vehicle with minimal upkeep.
**Best Approach:**- **Get a pre-purchase inspection** from a mechanic experienced with GM s 1990s models.
- **Check for rust** (especially in the wheel wells and frame).
- **Verify transmission and fluid history** a neglected 4T60-E can be a major expense.
- **Test drive carefully** listen for unusual noises and check all electronics (windows, locks, climate control).
If these concerns are addressed, the **Buick Park Avenue remains a rewarding purchase** for the right buyer.
Details:
12 Month Warranty. Detailed Applications Years: Vehicle: 1991 - 1996 Buick Park Avenue.
part #: 18rjxngn price
- $27.37
specifications carlockiio:
- for models: Park
- for makes: Buick
- for years: 1991-1996
- brand: Standard Motor Products
- mpn: 18rjxngn
- part type: Trunk Lock Motor
- compatible make/model: Buick Park Avenue
- compatible years: 1995 1991 1992 1993 1994 1996 95 91 92 93 94 96
- fitment info: Trunk Lock With Chrome Finish
- manufacturer warranty: 12 Month Warranty
- attention: Read Full Description To Confirm Fitment
- cs-sku: 400
seller carlockiio:
- city: Austell, Georgia
- rating: 99.2%
- # reviews: 23879
payments carlockiio:
- other
- wallet: Google-pay
- credit card: Diners-club
general carlockiio:
- condition: New
- Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware
offer carlockiio:
- sold: 0
- availability: In Stock
- options: Ship-to-home
- started: April 7, 2026
- quantity: 1
shipping carlockiio:
- cost: $0.00
- class: Economy
- service: Economy
- type: Fixed
- transit: 3-7 Days
returns carlockiio:
- policy: Returns Accepted
- time: 30 Days
- paid by: Seller
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