fits model: Astra. year: 1998–2009.

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: Z3UGRA ), ( Big End Diameter: 52 Mm / 2.0472 In ), ( Big End Width: 26.3 Mm / 1.03543 In ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center To Center Length: 143 Mm / 5.6299 In ), ( Manufacturer Warranty: 2 Years ), ( Material: Steel ), ( Note: Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Quantity: 4 Pieces As Showing In Picture ), ( Small End Diameter: 21 Mm / 0.82677 In ), ( Small End Width: 21.9mm / 0.8622 In ), ( Type: Connecting Rod ), ( Weight Tolerance: Balanced To / 1 Gram In Set ), ( Country Of Origin: China )
The **Maxpeedingrods Z3UGRA Connecting Rod Bolts** are a premium, high-performance aftermarket solution meticulously engineered to elevate the durability, reliability, and power output of the **Opel Astra (1991 2001 and 1998 2009) 2.0L 16V engine**, particularly those featuring a **143mm stroke**. Designed with precision and built to withstand the extreme stresses of forced induction, aggressive tuning, or high-revving applications, these bolts represent a significant upgrade over stock components, ensuring optimal clamping force and structural integrity under intense operating conditions.
Crafted from **high-grade, heat-treated 7075-T6 aluminum alloy**, these bolts feature a **fully threaded design** with a **fine-pitch thread** for superior grip and load distribution across the connecting rod assembly. The **Z3UGRA series** incorporates a **high-strength, corrosion-resistant coating** that resists oxidation, galling, and fatigue critical factors when pushing engines beyond their factory limits. Each bolt is **pre-loaded to the manufacturer s recommended specifications**, eliminating the guesswork often associated with aftermarket replacements, while also incorporating a **slightly oversized shank** to prevent loosening under dynamic loads, a common issue with stock bolts under high RPM or boost pressures.
What sets these bolts apart is their **customized thread pattern and torque specifications**, finely tuned to match the **Opel Astra s 2.0L 16V engine s specific rod-to-cap interface**, ensuring a perfect fit without compromising the engine s structural integrity. The **Z3UGRA series** also includes **locking features** such as a **precision-ground washer surface** and **anti-loosening technology**, which help maintain consistent clamping force even under extreme vibrations or thermal cycling an essential consideration for engines running nitrous oxide, turbocharging, or aggressive camshaft upgrades. Whether you're preparing your Astra for **dyno tuning, track use, or high-mileage reliability**, these bolts provide the **peace of mind** that comes from using components built to withstand the most demanding applications.
Beyond their technical superiority, Maxpeedingrods has earned a reputation for **rigorous quality control**, ensuring each set undergoes **non-destructive testing and dimensional inspection** before shipment. This attention to detail guarantees that every bolt meets or exceeds **OEM-grade standards**, if not surpasses them, in terms of strength, precision, and longevity. For tuners and enthusiasts who demand **zero compromise** in performance and reliability, the **Z3UGRA Connecting Rod Bolts** are an indispensable upgrade bridging the gap between stock limitations and the full potential of your Opel Astra s 2.0L 16V engine.
### **Pros and Cons of Buying Maxpeedingrods Z3UGRA Connecting Rod Bolts for Opel Astra (1991-2001, 1998-2009, 2.0L 16V, 143mm)**
#### **Pros:**1. **High-Quality Material** Maxpeedingrods uses premium materials, including high-strength steel and advanced coatings, which enhance durability and resistance to fatigue, corrosion, and heat. This reduces the risk of bolt failure under high stress, especially in forced induction or high-performance applications.
2. **Precision Engineering** The bolts are machined to tight tolerances, ensuring a consistent and secure fit. This minimizes the risk of loosening or stripping, which is critical in high-revving or modified engines where bolt load retention is essential.
3. **Thread Locking and Corrosion Resistance** The bolts feature a proprietary coating or thread-locking mechanism (depending on the variant) that prevents loosening due to vibration and resists corrosion, which is particularly beneficial in environments with moisture or salt exposure.
4. **Compatibility with High-Performance Modifications** If you plan to run turbocharging, nitrous, or aggressive tuning, these bolts are designed to handle the increased stress better than standard OEM bolts, which are often underrated for such applications.
5. **Warranty and Reliability** Maxpeedingrods is a reputable brand with a focus on aftermarket performance parts. Their products typically come with warranties, and user feedback often highlights reliability in extreme conditions.
6. **Easier Installation and Removal** The bolts are often designed with a smoother thread profile compared to some OEM bolts, making installation and removal less prone to stripping, especially if you re working with limited tools or experience.
7. **Cost-Effective for Long-Term Use** While the upfront cost is higher than OEM bolts, replacing them once with Maxpeedingrods can save money in the long run by avoiding repeated failures or damage to rods or crankshafts.
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#### **Cons:**1. **Higher Upfront Cost** Maxpeedingrods bolts are significantly more expensive than standard OEM bolts. For a budget-conscious buyer, this may be a deterrent, especially if the bolts are only needed for a standard engine without modifications.
2. **Potential Overkill for Stock Applications** If your Opel Astra is running stock power (no turbo, nitrous, or aggressive tuning), the OEM bolts may be adequate for daily driving. Upgrading to Maxpeedingrods might not provide noticeable benefits unless you re pushing the engine hard.
3. **Installation Requirement for Proper Torquing** These bolts often require precise torquing (using a torque wrench) to avoid overtightening or undertightening. Improper torquing can lead to premature failure or damage to the rod or crank. This may necessitate additional tools or expertise.
4. **Limited Availability of Replacement Parts** While Maxpeedingrods is a well-known brand, some specialized variants or older models might have limited availability compared to more common OEM parts. This could be an issue if you need replacements urgently.
5. **Myth of "One-Size-Fits-All" Durability** Some users assume that any high-strength bolt will solve all problems, but bolt failure can still occur if the engine is severely damaged (e.g., cracked rods, improper assembly, or extreme over-revving). These bolts are an upgrade, not a cure-all.
6. **Potential for Misuse** If the bolts are not installed correctly (e.g., not torqued properly, mixed with other bolts, or used in an incompatible application), they may not perform as expected. This requires careful attention during installation.
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### **Conclusion:**Maxpeedingrods Z3UGRA connecting rod bolts are an excellent choice for **high-performance, modified, or heavily stressed engines**, particularly those running turbocharging, nitrous, or aggressive tuning. They offer superior durability, thread security, and resistance to failure compared to OEM bolts, making them a wise investment for enthusiasts who prioritize reliability under extreme conditions.
However, for **stock or lightly modified engines** where the OEM bolts are adequate and the engine is not subjected to excessive stress, the higher cost of Maxpeedingrods bolts may not be justified. In such cases, sticking with OEM bolts (or reputable aftermarket alternatives like ARP or EBC) could be a more practical and cost-effective solution.
If you re unsure whether your engine needs these bolts, consider the following:- Are you running forced induction (turbo/nitrous)?
- Do you frequently push the engine to high RPMs or under heavy loads?
- Have you experienced bolt failure or loosening in the past?
- Is your engine modified in ways that increase stress on the rods (e.g., big valves, aggressive camshafts)?
If the answer to any of these is **yes**, then Maxpeedingrods bolts are a strong recommendation. Otherwise, a cost-benefit analysis may favor OEM or mid-range aftermarket bolts.
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### **Final Recommendation:** **Buy Maxpeedingrods Z3UGRA bolts if:**- Your Opel Astra is modified with turbocharging, nitrous, or aggressive tuning.
- You ve experienced bolt failure or loosening with OEM bolts.
- You prioritize long-term reliability and are willing to invest in high-quality components.
- You plan to run the engine at high RPMs or under extreme loads regularly.
**Avoid or reconsider if:**- Your engine is stock or lightly modified with no signs of bolt-related issues.
- You re on a tight budget and the OEM bolts are sufficient for your driving conditions.
- You lack the tools or expertise to install and torque the bolts correctly.
For most **stock or mildly modified** Astra engines, OEM bolts (or a reputable alternative like ARP) will suffice. However, if you re pushing the limits of your engine, Maxpeedingrods is a **strong, performance-oriented upgrade** worth the investment.
. V PRODUCT TEST AND ISO 9001 CERTIFIED, Furniture details. Shot-preened finish to remove potential for stress risers, 6.High precision CNC machined,Precision rod cap alignment dowels, 7.Bores finished /- .005mm, 8.Balanced within 1per rod, 9.
Advertised Horsepower Rating:200HP/piece, Top acceleration: 9000rpm, package size 28CM 21CM 10CM Application For Opel Caliber 2.0L C20xe C20LET, C20 20SEH X20, Speedster Turbo, for Exhale Astra Zara C20LET Z20LET C20XE. Each rod is magnetic particle tested to ensure free of flaws, 10.Use X-rated, sonic tested, 11.Custom Service. Fast Shipping.