TOP-LIFTSUPPORT TLO17521901S Cdi Module 332-5772A7 332-5772A1 332-5772A2 114-5772

( Brand: Top-liftsupport ), ( Manufacturer Part Number: TLO17521901S ), ( Warranty: 1 Year ), ( Type: Cdi Switch Box ), ( Placement: Right, Front ), ( Intended Use: Replacement Part ), ( Color: Black ), ( Dimensions: 21.5cm X 9.8cm X 4cm ), ( Surface Material: As The Photos Show ), ( Material: Metal, Plastic ), ( Oe Spec Or Performance/custom: Oe Spec ), ( Modified Item: No )

Review TOP LIFTSUPPORT Cdi Module Mercury 332-5772a

The **Top-Lift TLO17521901S CDI Module** is a high-performance, precision-engineered ignition control unit designed exclusively for Mercury Marine s **332-5772A7, 332-5772A1, 332-5772A2, 332-5772, and 114-5772** outboard motors, ensuring optimal combustion, reliable starting, and enhanced fuel efficiency. Built to meet the exacting standards of modern marine propulsion systems, this CDI (Capacitor Discharge Ignition) module replaces the factory unit with a durable, corrosion-resistant alternative that withstands the harsh saltwater environment while delivering consistent spark performance. The TLO17521901S features a robust, sealed construction with high-quality materials, including a reinforced housing and corrosion-proof contacts, to prevent moisture ingress and electrical degradation common issues that plague standard OEM components over time. This module incorporates advanced ignition timing technology, precisely calibrated to match the engine s camshaft and crankshaft sensors, ensuring peak power output and smoother operation, whether you re cruising at idle or revving at wide-open throttle. Its compact yet sturdy design allows for easy installation, fitting seamlessly into the engine s wiring harness without the need for modifications, making it an ideal drop-in replacement for mechanics and DIY enthusiasts alike. Whether you re restoring an older Mercury outboard or upgrading a newer model for improved reliability, the TLO17521901S CDI module provides a dependable, long-lasting solution that restores factory performance while reducing the risk of misfires, rough idling, or ignition failure critical for both performance and longevity in marine applications.

### **Pros and Cons of buying a Top-Lift Support TLO17521901S CDI Module for Mercury Outboards (332-5772A7, 332-5772A1, 332-5772A2, 332-5772A, 114-5772)**

1. **Compatibility** This CDI module is specifically designed for the listed Mercury outboard models, ensuring a proper fit without modification. It replaces the original ignition control unit, which may have failed over time.

2. **Reliability** Top-Lift Support is a reputable brand known for producing high-quality marine parts. Their CDI modules are built to withstand the harsh marine environment, reducing the risk of premature failure.

3. **Performance Improvement** A properly functioning CDI module ensures consistent spark generation, which can improve engine starting, smooth operation, and fuel efficiency. If your engine was misfiring or struggling to start, this replacement may resolve those issues.

4. **Easy Installation** The module is designed for straightforward replacement, typically requiring only basic tools. No major wiring or engine modifications are usually needed, making it a DIY-friendly repair.

5. **Cost-Effective Alternative to Engine Replacement** If your engine s CDI module has failed, replacing it with this unit is far cheaper than buying a new or rebuilt engine. It extends the life of your existing motor.

6. **Warranty Coverage** Top-Lift Support parts often come with a warranty (check the specific terms), providing peace of mind in case of defects or early failure.

7. **Prevents Further Damage** A failing CDI module can cause prolonged misfires, which may lead to more expensive engine damage (e.g., cylinder head or piston issues). Replacing it early prevents secondary damage.

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1. **Potential Counterfeit Concerns** Some aftermarket parts, including CDI modules, may be counterfeit or low-quality knockoffs. Ensure you purchase from an authorized dealer or a trusted seller (e.g., Amazon, marine supply stores, or Top-Lift Support s official website) to avoid receiving a faulty or incompatible part.

2. **Limited Longevity Compared to OEM** While Top-Lift Support parts are durable, they may not last as long as an original Mercury OEM CDI module, especially if the engine is heavily used or in harsh conditions. However, this is often negligible compared to the cost of an OEM replacement.

3. **Compatibility Verification Required** Double-check that the part number (TLO17521901S) matches your exact engine model and variant. Some Mercury engines share similar CDI modules, but slight differences (e.g., wiring harness or mounting) could cause issues if not verified.

4. **No Diagnostic Tools Included** If your engine has persistent issues after replacement (e.g., still misfiring or not starting), you may need a marine diagnostic tool or professional inspection to identify underlying problems (e.g., fuel system, spark plugs, or wiring).

5. **Installation Risks for Inexperienced DIYers** While the installation is generally simple, improper handling of electrical components (e.g., damaging wires or not securing the module properly) could lead to electrical shorts or failure. If unsure, consult a marine mechanic.

6. **Price Sensitivity** While affordable compared to engine replacement, the cost may still be a concern for budget-conscious buyers. However, it is a small investment relative to the potential cost of engine failure.

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### **Conclusion**

The **Top-Lift Support TLO17521901S CDI module** is a **strong, cost-effective replacement** for the listed Mercury outboard models, offering reliability, ease of installation, and performance benefits. It is ideal for boat owners experiencing ignition-related issues (e.g., no-start, rough idle, or misfires) who want a quick and affordable fix. The brand s reputation for quality and the part s compatibility make it a **highly recommended choice** for most users.

However, **buyers should ensure they purchase from a trusted source** to avoid counterfeit parts and **verify compatibility** with their exact engine model. If the engine has other underlying issues (e.g., fuel pump failure, bad spark plugs, or wiring problems), replacing just the CDI module may not fully resolve the problem. In such cases, a professional inspection is advisable.

### **Recommendation**

- Your Mercury outboard (332-5772 series or 114-5772) is experiencing ignition-related problems.

- You want a **reliable, affordable, and easy-to-install** replacement.

- You purchase from a **verified seller** (e.g., Amazon, marine supply stores, or Top-Lift Support s official channels).

- You suspect **other major engine issues** (e.g., fuel system, mechanical wear) that require professional diagnosis.

- You cannot confirm the **exact compatibility** of the part with your engine variant.

- You are uncomfortable with **basic electrical or mechanical work** and prefer professional installation.

**Final Verdict:** **Highly recommended for most users** as a practical and effective solution for CDI-related engine problems.

Details:

CDI Module For Mercury 332-5772A7 332-5772A1 332-5772A2 332-5772A 114-5772. Fits model's: 40 HP 4 Cl Serial # C159200-G589999 45-50 5531630 and higher 75 6432901 80 900 Jet999 85 998 100 B 999 115 C100000-G437999 125 D283222-G437999. Specs: 32-5772A1, 332-5772A2, 332-5772A3, 332-5772A4, 332-5772A5, 332-5772A7, 114-5772 and 18-5881. Package Service.

The images shown are not the actual item and for your reference only. Condition: New. Fast shipping:All our packages use USPS First Class/UPS/FedEx. New List Item.

part #: tlo17521901s prices

• $32.86-$39.39

specifications ouboaen:

• for makes: Mercury
• brand: Top-liftsupport
• mpn: Tlo17521901s
• warranty: 1 Year
• type: Cdi Switch Box
• placement: Right, Front
• intended use: Replacement Part
• color: Black
• dimensions: 21.5cm X 9.8cm X 4cm
• surface material: As The Photos Show
• material: Metal, Plastic
• oe spec or performance/custom: Oe Spec
• modified item: No

offer ouboaen:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• quantity: 10
• started: April 13, 2026
• sold: 0

payments ouboaen:

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

seller ouboaen:

• # reviews: 56474
• rating: 99.4%
• city: Ontario, California

returns ouboaen:

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

general ouboaen:

• condition: New
• Boat Parts > Outboard Engines Components > Other

shipping ouboaen:

• transit: 3-8 Days
• class: Standard
• service: Standard
• cost: $0.00
• type: Fixed

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