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  3. BUICK 20699278

BUICK 20699278 Reatta Grommet Seal Wdo General F/d

fits make: Buick. year: 1988–1991.

20699278 General Motors Fits 1988-1991 Buick Reatta Grommet Seal F/d Wdo - New Oem

( Manufacturer Part Number: 20699278 ), ( Part Type: Seal Motor ), ( Storedescription: Acdelco Was Founded Over 100 Years Ago And Flourishes On The Inno )

Review BUICK General Motors Reatta Grommet Seal F/d Wdo New Oem fits 1988–1991

The **1988-1991 Buick Regatta Front/Driver-Side Window Defroster Grommet Seal (Part #20699278)** is a precision-engineered rubber component designed to maintain the integrity and functionality of the Regatta s front driver-side window mechanism. Crafted from high-quality, durable rubber, this grommet seal is engineered to provide a tight, weather-resistant barrier between the window s glass and the vehicle s body panel, preventing drafts, moisture, and road debris from infiltrating the cabin. Its unique design features a slightly tapered, interference-fit profile that ensures a secure seal against the window s frame, reducing noise, improving insulation, and enhancing overall comfort during operation. This part is particularly critical for the Regatta s defroster system, as it helps direct warm air efficiently across the window while preventing air leaks that could compromise heating performance. Over time, exposure to UV rays, temperature fluctuations, and general wear can cause the original grommet to crack, harden, or degrade, leading to squeaks, leaks, or even window misalignment. Replacing it with this OEM-specification seal restores the window s smooth operation, seals out contaminants, and helps preserve the vehicle s resale value by maintaining its factory-like appearance and performance. Ideal for restoration projects, routine maintenance, or as a preventive measure, this grommet is a straightforward yet essential upgrade for any Buick Regatta owner seeking to preserve the integrity of their vehicle s window system.

### **Pros and Cons of Buying a 1988 1991 Buick Regal (G-Body Platform, 20699278 F/D WDO Grommet Seal)**

#### **Pros**

1. **Classic G-Body Platform** The 1988 1991 Buick Regal is part of the G-body family, which includes the Pontiac Grand Prix, Oldsmobile Cutlass Supreme, and Chevrolet Lumina. This platform is known for its solid construction, reliable drivetrain options, and a strong aftermarket support system. The Regal, in particular, was well-regarded for its comfort, smooth ride, and spacious interior.

2. **Reliable Engine Options**

- The **3.8L V6 (VIN starting with 1)** was a robust choice, offering good power (140 160 hp) and durability if maintained properly.

- The **3.0L Turbo V6 (VIN starting with 2)** was less common but could be fun if tuned, though it was prone to turbocharger and oil consumption issues if neglected.

- The **2.5L I4 (VIN starting with 3)** was economical but underpowered for the Regal s weight, making it less desirable unless fuel efficiency was the priority.

3. **Front-Drive (F/D) Advantages**

- Better weight distribution compared to rear-wheel-drive (RWD) G-bodies, leading to improved handling and stability.

- Easier maintenance access for some components (e.g., brakes, suspension).

- Modern drivability features for the era, including power steering and optional automatic transmissions (4T60-E or 4T65-E).

4. **Water-Driven (WDO) Option**

- The **Water-Driven Accessory (WDO) system** replaced the traditional belt-driven alternator and power steering pump with a water-cooled system. While this reduced belt wear and noise, it introduced a few quirks:

- The WDO system could be less reliable if the water pump or seals failed, leading to coolant leaks or electrical issues.

- Some owners report that the WDO can be finicky with voltage regulation, potentially affecting charging and electrical components over time.

- However, if the WDO is in good condition, it eliminates the need for belt replacements and can be more durable in extreme climates.

5. **Grommet Seal Reference**

- The mention of a **"grommet seal"** likely refers to a specific part (possibly related to the WDO system, transmission, or differential). If this seal is worn or leaking, it could indicate a minor repair need, but if it s intact, it suggests the vehicle has been reasonably well-maintained.

- G-bodies are known for their **sealed differentials**, which can last a long time if the seals are intact and the differential fluid is changed regularly.

6. **Aftermarket and Mod Potential**

- The G-body platform has a strong aftermarket, with parts available for suspension upgrades, engine swaps (e.g., LS engines in later years), and performance tuning.

- The Regal s body style is distinctive and often appreciated by classic car enthusiasts, making it a good candidate for restoration or customization.

7. **Value for Money (If Well-Maintained)**

- Compared to other G-bodies, the Regal is often less expensive to acquire, but its value depends heavily on condition. A well-kept example with a clean title and service records can be a great project car or daily driver.

- Parts are widely available, and labor costs are reasonable compared to newer vehicles.

8. **Comfort and Practicality**

- The Regal was designed as a family-oriented car, offering a comfortable ride, good visibility, and a spacious interior. The front-drive layout also contributes to a smoother ride quality.

- Optional features like power windows, locks, and cruise control make it more convenient than many contemporaries.

---

#### **Cons**

1. **Potential WDO System Issues**

- The **Water-Driven Accessory (WDO) system** is one of the most common failure points on these cars. Problems include:

- **Water pump failure**: Can lead to overheating or coolant leaks.

- **Electrical gremlins**: The WDO can cause voltage fluctuations, affecting the alternator, power steering, and other electrical components. Some owners report flickering lights or battery drain issues.

- **Seal leaks**: If the grommet seal (or related seals) is compromised, it could lead to coolant contamination in the electrical system, causing shorts or corrosion.

- A thorough inspection of the WDO system is **critical** before purchase. Look for signs of coolant leaks, rust in the electrical components, or a history of WDO-related repairs.

2. **Rust Concerns**

- G-bodies are notorious for rust, especially in the **wheel wells, rocker panels, and floor pans**. The front-drive layout can exacerbate rust issues in the subframe and suspension components.

- A **rust inspection** (especially under the car and in the wheel arches) is essential. Rust can lead to structural weakness, suspension failure, or even transmission issues if the subframe corrodes.

3. **Transmission Reliability**

- The **4T60-E and 4T65-E automatics** (common in 1988 1991 models) are generally reliable but can develop **solenoid or valve body issues** over time, leading to rough shifting or failure.

- **Manual transmissions** (3-speed or 4-speed) are less common but can be more durable if well-maintained.

- Always check for **fluid leaks**, **clunking noises**, or a **history of transmission repairs**.

4. **Electrical Quirks**

- G-bodies are known for **electrical gremlins**, including:

- **Intermittent issues** with windows, locks, or lights.

- **Alternator problems**, especially with WDO-equipped cars.

- **Grounding issues** that can cause random malfunctions.

- A **road test** should include checking all electrical components thoroughly.

5. **Suspension and Handling**

- The Regal s suspension is **softer than sportier G-bodies** (like the Grand Prix), which can make it feel sluggish in corners.

- **Worn bushings, shocks, or ball joints** can lead to poor handling or clunking noises. Inspect the suspension components carefully.

- The **steering can feel heavy** unless it s a power-steering model (which most were).

6. **Engine-Specific Weaknesses**

- **3.8L V6**: Generally reliable but can develop **head gasket leaks** or **valve cover gasket issues** if not maintained. Oil leaks from the **valve cover or oil filter housing** are common.

- **3.0L Turbo V6**: Prone to **turbo failure, oil consumption, and head gasket leaks**. If this engine is in the car, expect higher maintenance costs.

- **2.5L I4**: The least powerful option, but if well-maintained, it can be economical. However, it may struggle with towing or highway passing.

7. **Interior Wear and Tear**

- Vinyl interiors can crack or peel over time, especially in sunny climates.

- **Carpet and upholstery** may be worn, particularly in high-mileage examples.

- **Air conditioning** can fail if the compressor or seals are worn.

8. **Fuel Economy and Modern Standards**

- Fuel economy is **modest by today s standards** (around 16 20 MPG combined for the V6 models).

- Modern fuel efficiency and safety features (e.g., stability control, fuel injection) are absent, making it less practical for long-distance driving or highway use.

9. **Parts and Labor Costs**

- While parts are **affordable**, labor costs can add up, especially for rust repairs or transmission work.

- Finding a **trusted G-body specialist** is important, as some mechanics may not be familiar with the platform.

10. **Title and History Risks**

- Like many older cars, G-bodies can have **salvage titles, flood damage, or poor maintenance histories**.

- Always **run a vehicle history report** (e.g., Carfax, AutoCheck) and **get a pre-purchase inspection (PPI)** from a mechanic experienced with G-bodies.

---

#### **Conclusion**

The **1988 1991 Buick Regal (G-body, F/D, WDO)** can be a **great buy** if you:

- **Prioritize reliability and comfort** over raw performance.

- **Find a well-maintained example** with no major rust, transmission issues, or WDO problems.

- **Are prepared for potential electrical quirks** and minor repairs.

- **Enjoy classic car ownership** and don t mind some quirks for the sake of driving a well-built, comfortable sedan.

However, it is **not a plug-and-play project** for beginners. The **WDO system, rust, and transmission** are the biggest potential pitfalls, so **due diligence is essential**. If you re willing to invest time in research, inspections, and possibly repairs, this Regal could be a **fun, reliable, and rewarding** addition to your garage.

Details:

Buyer should verify this is the exact part needed before purchasing.

part #: 20699278 price

  • $35.29

specifications ocoosys:

  • for makes: Buick
  • for years: 1988-1991
  • mpn: 20699278
  • part type: Seal Motor
  • storedescription: Acdelco Was Founded Over 100 Years Ago And Flourishes On The Inno

shipping ocoosys:

  • service: Standard
  • class: Standard
  • transit: 4-11 Days
  • type: Fixed
  • cost: $0.00

offer ocoosys:

  • best offers: True
  • availability: In Stock
  • options: Ship-to-home
  • quantity: 5
  • sold: 0
  • started: May 16, 2026

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seller ocoosys:

  • # reviews: 23900
  • city: Beaver Dam, WI
  • rating: 99.7%

general ocoosys:

  • Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components
  • condition: New

returns ocoosys:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller
for makes: buick, for years: 1988-1991, part type: seal motor, storedescription: acdelco was founded over 100 years ago and flourishes on the inno,
category: auto parts > car truck parts accessories > engine cooling components, sku: 21699441347165853,
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