VICTOR REINZ 43158TBVZ Crankshaft Seal Rear Kit

( Brand: Victor Reinz ), ( Manufacturer Part Number: 43158TBVZ ), ( Part Type: Seal Crankshaft ), ( Placement On Vehicle: Rear ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Engine Crankshaft Seal Kit Rear; Offset Double Lip ), ( Years: 1969 1970 1971 1972 1973 1974 ), ( Application: Chevrolet Blazer Crankshaft Seal Kit ), ( Product Name 2: Engine Crankshaft Seal Kit ), ( Cs-sku: 400 )

Review VICTOR REINZ Chevrolet Crankshaft Seal Kit Rear fits BLAZER 1969–1974

The **Victor Reinz 43158TBVZ Crankshaft Seal Kit for 1969 1974 Chevrolet Blazer (Rear)** is a meticulously engineered aftermarket solution designed to restore sealing integrity and prevent costly fluid leaks in the rear main crankshaft area of your classic Chevrolet Blazer. Engineered with precision for compatibility with the GM 250-cubic-inch inline-six engine configuration found in these iconic vehicles, this kit features a high-quality **nitrile rubber seal** reinforced with a durable steel spring retainer, ensuring a tight, long-lasting seal that resists oil and coolant intrusion while maintaining optimal crankshaft rotation. The seal s robust construction is designed to withstand the thermal and mechanical stresses of daily driving, providing reliable protection against leaks that can compromise engine performance and longevity. Installation is simplified with the inclusion of a **precision-machined aluminum seal carrier**, which ensures proper alignment and seating of the seal during installation, reducing the risk of improper fitment and potential damage to the crankshaft or engine components. Whether you're preparing your Blazer for a long-distance road trip, restoring it to showroom condition, or addressing a persistent oil leak, this Victor Reinz kit delivers the durability and performance you need to keep your engine running smoothly. Backed by the brand s reputation for quality and reliability, this kit is an essential upgrade for any Blazer owner seeking to maintain the integrity of their drivetrain without compromising on fit or function.

### Pros and Cons of buying a Victor Reinz 43158TBVZ Crankshaft Seal Kit for 1969 1974 Chevrolet Blazer

1. **Compatibility** This kit is specifically designed for the 1969 1974 Chevrolet Blazer, ensuring a proper fit for the rear crankshaft seal (also known as the tailshaft seal or driveshaft seal). Avoiding generic or mismatched parts reduces the risk of leaks or damage.

2. **Quality Materials** Victor Reinz is a well-known brand in the automotive aftermarket, known for producing durable seals made from high-quality elastomers and reinforced with fabric or metal for longevity. Their products are engineered to withstand engine heat, vibration, and fluid exposure.

3. **Easy Installation** The kit typically includes clear instructions and may come with tools or guides to simplify the replacement process. Since the rear crankshaft seal is often accessible without major disassembly (depending on the vehicle s configuration), this kit is designed for straightforward installation.

4. **Prevents Leaks and Contamination** A failing crankshaft seal can cause transmission fluid, oil, or other fluids to leak into the engine bay or onto the driveshaft, leading to performance issues, increased wear, or even transmission failure. Replacing it proactively can prevent costly damage.

5. **Warranty and Support** Victor Reinz products often come with warranties, and the brand offers customer support for installation questions or issues with the seal. This provides peace of mind if problems arise post-installation.

6. **Cost-Effective Solution** Replacing a worn seal early is usually cheaper than dealing with secondary damage (e.g., transmission failure, driveshaft corrosion, or engine contamination). This kit offers a direct, affordable fix compared to potential long-term repairs.

7. **Improved Drivability** A properly sealed crankshaft ensures smooth power transfer and prevents fluid leaks that could affect shifting, acceleration, or overall vehicle performance.

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1. **Potential Overkill for Minor Issues** If the seal failure is due to a minor issue (e.g., a small crack or wear from normal use), the cost of the kit might seem high compared to the problem s severity. However, seals often fail catastrophically, so replacement is still recommended.

2. **Installation Challenges** While the kit is designed for ease of use, some users may find the process tricky, especially if they lack mechanical experience. Accessing the rear seal may require removing the driveshaft, transmission, or other components, which can be labor-intensive.

3. **Quality Variability** While Victor Reinz is reputable, the quality of seals can vary slightly by batch or storage conditions. Poorly stored seals (exposed to heat, oil, or UV light) may degrade before installation, though this is rare with reputable retailers.

4. **Additional Costs** Beyond the seal kit, you may need to purchase tools (e.g., seal pullers, torque wrenches, or gaskets for adjacent components like the transmission bellhousing) that aren t included. Labor costs also apply if you re not doing the work yourself.

5. **Limited Longevity Guarantee** While Victor Reinz seals are durable, their lifespan depends on driving conditions, fluid quality, and maintenance. In high-mileage or heavy-duty vehicles, the seal may need replacement sooner than expected.

6. **Misalignment Risks** If the seal isn t installed correctly (e.g., uneven seating or overtightening), it can lead to leaks or damage to the crankshaft or transmission components. Precision is key during installation.

7. **Part Availability** While Victor Reinz is widely available, some specialty auto parts stores or online retailers may not stock this exact kit, requiring additional research or ordering time.

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The Victor Reinz 43158TBVZ crankshaft seal kit is a **highly recommended choice** for 1969 1974 Chevrolet Blazer owners experiencing or anticipating rear crankshaft seal failure. Its **specific compatibility, durability, and ease of installation** outweigh the minor drawbacks, such as potential installation challenges or additional tool costs. The kit provides a **cost-effective, long-term solution** to prevent fluid leaks, transmission damage, and drivability issues.

For most DIYers or mechanics, the **benefits of using this kit far exceed the cons**, making it a **strong recommendation** if you re addressing a known or suspected seal failure. If you re unsure about the seal s condition, a visual inspection or fluid leak check is advisable before purchasing.

Purchase the Victor Reinz 43158TBVZ kit if you re replacing a worn or leaking rear crankshaft seal in your Blazer. Ensure you have the necessary tools and follow the installation instructions carefully to maximize the seal s lifespan. If the work seems too complex, consult a professional mechanic to avoid costly mistakes.

Details:

Meets or exceeds OE specifications. Dana engineering-approved for fit, form and function. 12 Month Warranty Fitment Notes: Vehicle: Engine: 1969-1974 Chevrolet Blazer5.7L V8, Blazer4.8L 6 Cl, Blazer4.1L 1969-1973 Blazer5.0L V8.

part #: 43158tbvz prices

• $38.11-$57.34

specifications cranshafengin:

• for models: Blazer
• for makes: Chevrolet
• for years: 1969-1974
• brand: Victor Reinz
• mpn: 43158tbvz
• part type: Seal Crankshaft
• placement on vehicle: Rear
• manufacturer warranty: 12 Month Warranty
• notes: Engine Crankshaft Seal Kit Rear; Offset Double Lip
• years: 1969 1970 1971 1972 1973 1974
• application: Chevrolet Blazer Crankshaft Seal Kit
• product name 2: Engine Crankshaft Seal Kit
• cs-sku: 400

seller cranshafengin:

• # reviews: 329698
• rating: 98.8%
• city: Whiteland, Indiana

offer cranshafengin:

• started: April 22, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: New

returns cranshafengin:

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

payments cranshafengin:

• credit card: Diners-club
• other
• wallet: Google-pay

shipping cranshafengin:

• type: Fixed
• class: Standard
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery
• transit: 2-6 Days
• carrier: FedEx

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