ALX-PAU-RB-555-034-CLA12 KARPARTS360 Cup Expansion Plug C2500

Review KARPARTS360 For Gmc C2500/k2500 Cup Expansion Plug 1.764 Inch Maximum Diameter for GMC C2500 K2500 1991–2000

Introducing the Karparts360 ALX-PAU-RB-555-034-CLA12, a top-tier cup expansion plug specifically designed for GMC C2500 and K2500 models from the year 1991 to 2000. This essential component is crucial for maintaining the optimal performance of your heavy-duty vehicle's cooling system.

The ALX-PAU-RB-555-034-CLA12 is engineered with precision and durability in mind. Its robust construction ensures reliable operation even under the most demanding conditions. This expansion plug features a 1.764 maximum cup size, making it an ideal fit for your GMC C2500 or K2500's cooling system.

The cup expansion plug plays a critical role in the pressure-temperature control of your engine cooling system. It expands and contracts with the engine coolant temperature, ensuring that the coolant is distributed evenly throughout the engine and radiator. Over time, the expansion plug can wear out, leading to potential cooling system issues.

By investing in the Karparts360 ALX-PAU-RB-555-034-CLA12, you are not only ensuring the continued performance of your cooling system but also contributing to the longevity of your GMC C2500 or K2500. This replacement part is a must-have for any vehicle owner seeking to keep their heavy-duty truck in top shape.

In summary, the Karparts360 ALX-PAU-RB-555-034-CLA12 is a high-quality, durable cup expansion plug designed specifically for the GMC C2500 and K2500 models from 1991 to 2000. Its 1.764 maximum cup size ensures a perfect fit, and its robust construction guarantees reliable operation even under the most demanding conditions. By investing in this essential component, you are contributing to the continued performance and longevity of your heavy-duty truck's cooling system.

Pros and Cons of Buying KARPARTS360 ALX-PAU-RB-555-034-CLA12 for GMC C2500/K2500 1991-2000: Cup Expansion Plug 1.764 Maximum

a. OEM Quality: This part is an original equipment manufacturer (OEM) replacement, ensuring a perfect fit and optimal performance.

b. Reliability: KARPARTS360 is a well-known and reputable automotive parts supplier, offering high-quality components.

c. Convenience: By purchasing this cup expansion plug from a trusted supplier like KARPARTS360, you can avoid the hassle of dealing with potential counterfeit or incompatible parts from unknown sources.

d. Availability: This part is specifically designed for the GMC C2500/K2500 models from 1991 to 2000, making it easily accessible when needed.

a. Cost: OEM parts can be more expensive than aftermarket alternatives, and this cup expansion plug may be no exception.

b. Delivery Time: Depending on availability and shipping methods, the part may take some time to arrive, potentially causing inconvenience or delaying repairs.

While the KARPARTS360 ALX-PAU-RB-555-034-CLA12 cup expansion plug for the GMC C2500/K2500 1991-2000 may come with a higher price tag compared to aftermarket alternatives, it offers the benefit of OEM quality, reliability, and convenience. For those who prioritize the assurance of a perfect fit and optimal performance, this part is an excellent choice. However, for those who are budget-conscious, it may be worth considering aftermarket alternatives while being aware of the potential risks of compatibility issues and lower quality.

If you are looking for a high-quality, reliable, and OEM replacement cup expansion plug for your GMC C2500/K2500 1991-2000, the KARPARTS360 ALX-PAU-RB-555-034-CLA12 is an excellent option. However, if you are on a tight budget, it may be worth exploring aftermarket alternatives while carefully considering the potential risks and trade-offs. Ultimately, the decision depends on your priorities, budget, and level of tolerance for potential compatibility issues and lower quality.

Details:

High quality aftermarket replacement for oem parts. The numbers have to match exactly or else it will not fit. Free fast shipping 1 year warranty 100% money back 30-day guarantee. KARPARTS360 for Gmc C2500/k2500 1991 -2000 cup expansion plug steel 1.764 inches maximum diameter 1.751 minimum replacement 2379621, 3743389: item condition: brand new in original box, oem part #:2379621, part slink #: material.

Misc notes factory sealed - brand new in box. All products ship in pristine and original manufacturer packaging. Dot certified for extra security and reliability, certification advantage.

Built for durability: made from high-quality materials, this product has been tested to ensure long-lasting performance. Misc notes 1: expansion plug.

specifications engineblocksam:

• for models: C2500, K2500
• for makes: Gmc
• for years: 1991–2000
• brand: Karparts360
• mpn: Alx-pau-rb-555-034-cla12
• type: Cup Expansion Plug
• material: Steel
• oe/oem part number: 2379621
• item weight: 0.7100
• fitment type: Direct Replacement
• generic keywords 1: Part
• oem equivalent part number 2: 3743389
• intended use: Automobiles
• misc fitment notes: See Notes
• manufacturer warranty: 1 Year
• upc: 800111365537

returns engineblocksam:

• time: 30 days
• policy: returns accepted
• paid by: seller

seller engineblocksam:

• # reviews: 109138
• rating: 99.5%
• city: west chicago, il

offer engineblocksam:

• started: december 25, 2025
• options: ship-to-home
• sold #: 28
• quantity: 8
• availability: in stock

shipping engineblocksam:

• service: expedited
• class: expedited
• type: fixed
• transit: 4-8 days

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

payments engineblocksam:

• credit card: diners-club
• other
• wallet: apple-pay