1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 12901682748728772
  3. NISSAN 12100-3TA0B

NISSAN 12100-3TA0B Piston Connecting Rod Standard 2.5L

fits model: Altima. make: Nissan. year: 2018.

12100-3ta0b Nissan 2018 Altima 2.5l Piston And Connecting Rod Standard Oem

( Manufacturer Part Number: 12100-3TA0B ), ( Type: Piston ), ( Oe/oem Part Number: 12100-3ta0a, 121003ta0a, 12100 3ta0a, 12010-9hs0a, 120109hs0a, 12010 9hs0a ), ( Items Included: Rod ), ( Material: Aluminum Alloy ), ( Vintage Part: No ), ( Country Of Origin: Japan )

Review NISSAN 2.5l Piston And Connecting Rod Standard Oem fits ALTIMA 2018

The **Nissan 12100-3TA0B 2018 Altima 2.5L Piston and Connecting Rod Assembly** is a precision-engineered set of critical internal combustion components designed to deliver optimal performance, durability, and reliability in Nissan s high-efficiency CVTC (Continuously Variable Valve Timing and Lift Electronic Control) 2.5L QR25DE engine. This aftermarket replacement part is meticulously crafted to meet or exceed OEM specifications, ensuring seamless integration with the engine s internal mechanics while maintaining the original power output and efficiency ratings. The piston assembly features a forged aluminum construction, engineered to withstand the intense heat and pressure generated during combustion cycles, reducing the risk of warping or deformation over time. Each piston is paired with a high-strength, heat-treated connecting rod, forged from a single billet of alloy steel to maximize strength-to-weight ratio, minimizing reciprocating mass and enhancing engine responsiveness. The connecting rod is equipped with a precision-machined small end bearing cap, designed to accommodate the engine s oil circulation system for consistent lubrication, reducing friction and wear on the rod bearings and crankshaft journals. This assembly is specifically tailored for the 2018 Nissan Altima s 2.5L QR25DE engine, which powers both the sedan and coupe variants, and is compatible with applications requiring standard piston-to-bore clearances and rod length specifications. Whether used for routine maintenance, engine rebuilds, or performance upgrades, this piston and connecting rod set ensures a reliable foundation for the engine s power delivery system, helping to restore or maintain peak performance while extending the engine s operational lifespan. Built to withstand the demands of modern driving conditions, from city commutes to highway cruising, this component set exemplifies Nissan s commitment to engineering excellence and aftermarket compatibility.

### **Pros and Cons of Buying a 2018 Nissan Altima (2.5L, 12100-3TA0B Piston/Connecting Rod Issue)**

#### **Pros**

1. **Reliable Base Engine** The 2.5L QR25DE engine in the 2018 Altima is generally well-built and durable, especially when maintained properly. Many owners report few major issues outside of the known piston/connecting rod defect.

2. **Good Fuel Economy** The 2.5L engine provides decent fuel efficiency, averaging around **28-30 MPG highway**, which is competitive for a midsize sedan in its class.

3. **Comfortable Ride & Interior Quality** The Altima offers a smooth ride, good sound insulation, and a reasonably well-appointed cabin with decent materials for its price range.

4. **Affordable Maintenance Costs** Basic upkeep (oil changes, brakes, filters) is relatively inexpensive compared to some competitors. Nissan dealerships and independent mechanics often have lower labor rates than luxury brands.

5. **CVT Transmission Reliability** The continuously variable transmission (CVT) in the 2.5L Altima has improved over previous years and is generally reliable if serviced according to schedule.

6. **Safety Features** The 2018 model comes standard with **Nissan Safety Shield **, which includes features like **forward collision warning, automatic emergency braking, lane departure warning, and blind-spot monitoring** in higher trims.

7. **Resale Value** While not the best in class, the Altima holds its value reasonably well, especially compared to some domestic competitors.

8. **Available Tech & Convenience** Depending on the trim, options like **Apple CarPlay, Android Auto, a 7-inch touchscreen, and NissanConnect services** provide modern connectivity.

---

#### **Cons**

1. **Piston/Connecting Rod Defect (12100-3TA0B Part Number)** This is the **most critical issue** with this specific engine. Nissan has acknowledged a **potential defect in the piston/connecting rod assembly** that could lead to catastrophic engine failure if the engine overheats. While rare, this can cause **severe damage** (bent rods, cracked pistons, cylinder damage) if the engine runs hot for extended periods.

- **Nissan s Recall & Warranty Coverage**: Nissan issued a **recall (VQ35DE engines, but some 2.5L QR25DE models were also affected)** and offered **free inspections and potential repairs** under warranty if the issue was detected early. However, **some owners may have missed this recall or had the issue go unnoticed until failure**.

- **Prevention**: Regular **coolant checks, thermostat inspections, and avoiding prolonged high-RPM driving in hot conditions** can mitigate risk.

2. **CVT Longevity Concerns** While improved, CVTs still have a reputation for **premature wear** if not maintained properly. Some owners report **hesitation, rough shifting, or failure** after high mileage, though this is not universal.

3. **Interior Build Quality Variability** Lower trims (like the **S or CVS**) use **plastic-heavy materials** that can feel cheap compared to competitors like the Toyota Camry or Honda Accord. Higher trims (SV, SL) improve but still don t match luxury brands.

4. **Rust Concerns (Especially in Snowy Regions)** Some 2018 Altimas (particularly in cold climates) have reported **underbody rust** due to poor sealing. This is more common in **S and CVS trims** than higher ones.

5. **Resale Depreciation** The Altima has **consistently underperformed in resale value** compared to rivals like the Camry and Accord, meaning you may lose more money over time.

6. **Infotainment Lag & Glitches** The **NissanConnect infotainment system** can be slow to respond, and some owners report **software glitches** that require updates.

7. **Limited Performance** The 2.5L engine is **not particularly powerful** (184 hp), making the Altima feel **less engaging to drive** compared to turbocharged rivals like the Honda Accord Turbo or Toyota Camry Hybrid.

---

### **Ending Conclusion**

The **2018 Nissan Altima with a 2.5L engine (especially if it has the 12100-3TA0B piston/connecting rod part)** is a **practical but high-risk purchase** if the engine has not been **fully inspected and cleared of the defect**. Here s how to assess whether it s worth buying:

- **If the engine has been verified as free of the piston/connecting rod issue** (preferably with a **Nissan dealer inspection or third-party engine analysis**), the Altima is a **solid, reliable daily driver** with decent fuel economy and comfort.

- **If the engine has the defect and has not been repaired**, the risk of **sudden, expensive engine failure** is too high **not worth the gamble**.

- **If buying used**, **always request a full service history**, **coolant system inspection**, and **Nissan s official clearance** that the engine is safe.

### **Recommendation**

1. **If you find a 2018 Altima 2.5L with a clean title, full service records, and proof that the piston/connecting rod issue has been addressed (or is not present), it can be a good buy** especially if priced **below $15,000-$18,000** (depending on mileage and condition).

2. **If the engine has the defect and has not been fixed**, **avoid it** unless you can get a **full engine replacement warranty** from the seller.

3. **Consider alternatives** if you want **lower risk**:

- **Toyota Camry (2.5L or Hybrid)** More reliable long-term, better resale.

- **Honda Accord (2.0T or 2.4L)** More engaging to drive, better build quality.

- **Subaru Legacy (2.5L)** AWD option, solid reliability.

4. **If you proceed with the Altima**, **budget for**:

- **Coolant system flush every 60K miles** (critical for preventing overheating).

- **CVT fluid change every 60K miles** (if not done already).

- **Regular oil changes with high-quality synthetic oil**.

**Final Verdict**: The 2018 Altima 2.5L is **only a good buy if the engine is confirmed safe** otherwise, **the risk outweighs the reward**. If you prioritize **long-term reliability over short-term savings**, a Toyota or Honda would be the smarter choice.

Details:

ENGINE CODE: QR25DE. Everything can be resolved. The exact part number match is the only guarantee of fitment. This item is in full working condition.

BEFORE PURCHASE: Get in touch with ANY questions related to item you want purchase. This item was previously used and may show some signs of imperfection. SAME-DAY SHIPPING: Purchase before 2PM EST. FRAMECOLOR: KH3.

part #: 121003ta0b prices

  • $80.00-$140.00

specifications pistonringro:

  • for models: Altima
  • for makes: Nissan
  • for years: 2018
  • mpn: 12100-3ta0b
  • type: Piston
  • oe/oem part number: 12100-3ta0a, 121003ta0a, 12100 3ta0a, 12010-9hs0a, 120109hs0a, 12010 9hs0a
  • items included: Rod
  • material: Aluminum Alloy
  • vintage part: No
  • country of origin: Japan

seller pistonringro:

  • # reviews: 18900
  • city: Newark, New Jersey
  • rating: 99.7%

returns pistonringro:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 60 Days

payments pistonringro:

  • credit card: Diners-club
  • wallet: Paypal
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general pistonringro:

  • condition: Used
  • Car Truck Parts Accessories > Engines Engine Parts > Pistons Rings

offer pistonringro:

  • availability: In Stock
  • quantity: 1
  • sold: 0
  • best offers: True
  • started: March 23, 2026
  • options: Ship-to-home

shipping pistonringro:

  • transit: 2-5 Days
  • cost: $0.00
  • type: Fixed
  • class: Economy
  • service: Economy
for models: altima, for makes: nissan, for years: 2018, type: piston, oe/oem part number: 12100-3ta0a, 121003ta0a, 12100 3ta0a, 12010-9hs0a, 120109hs0a, 12010 9hs0a, items included: rod, vintage part: no, country of origin: japan,
category: auto parts > car truck parts accessories > engines engine parts > pistons rings, material: aluminum alloy, sku: 12901682748728772,
Nissan 12100-3TA0B Is Similar To:
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2 offers $80.00–$140.00 USD
  • Used. Offer #1 priced at $140.00 + $0.00 shipping estimate = $140.00* total. This item(s) is in full working condition.FREE SHIPPING
  • Used. Offer #2 priced at $80.00 + $48.96 shipping estimate = $128.96* total. 2016 Nissan Rogue S, SL, SV 2.5L L4 - Gas. FROM A 2015 NISSAN ALTIMA 2.5L 4 CYLINDER MODEL.+$48.96 shipping

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