When it comes to maintaining the functionality of a Honda S2000 or Insight’s door locking system, the 72115-S5A-003 Front Right Power Door Plastic Lock Latch Actuator emerges as a critical component for owners seeking reliable performance. Designed specifically for the front right door, this actuator serves as a direct replacement for OEM parts, ensuring seamless integration with existing electrical systems and mechanical linkages. Its role in securing the vehicle’s cabin cannot be understated, particularly for enthusiasts who prioritise both convenience and security in their driving experience.
One of the standout features of the 72115-S5A-003 actuator is its precise engineering to match Honda’s original specifications. Constructed with a durable plastic housing and reinforced internal gears, the unit is engineered to withstand repeated use while maintaining responsiveness. Owners have noted that the actuator’s design mirrors the OEM part closely, with one user remarking, “The fit was spot-on, and it clicked into place without any modifications to the door panel.” This compatibility is further emphasised by its plug-and-play wiring harness, which simplifies installation for those familiar with basic automotive DIY projects. However, some have mentioned that minor adjustments to the actuator rod length or alignment may be required to achieve optimal engagement with the door latch mechanism – a process described as “straightforward with basic tools” by those who’ve undertaken the task.
Durability remains a key consideration for any door lock component exposed to daily wear. The actuator’s plastic construction has drawn mixed observations from the community. While some appreciate the lightweight properties and corrosion resistance of the material, others have expressed concerns about long-term resilience. A recurring theme in feedback suggests that “applying silicone-based lubricant to the gears during installation significantly improves smooth operation and may extend service life.” This proactive maintenance approach aligns with recommendations from experienced technicians, who emphasise the importance of periodic lubrication in preserving plastic gear teeth from premature wear. It’s worth noting that several users reported successful multi-year performance from their units, particularly when installed in garaged vehicles or those not subjected to extreme temperature fluctuations.
The electrical performance of this actuator warrants particular attention. Designed to work with the vehicle’s existing central locking system, it demonstrates consistent response times when activated via remote key fob or interior door switches. One owner noted, “The locking action feels more positive compared to my worn-out original unit, with a satisfying clunk that confirms engagement.” This improvement in tactile feedback is attributed to the new actuator’s refreshed internal springs and solenoids, which restore the authoritative operation characteristic of Honda’s engineering. Electrical connectivity appears robust, with multiple users confirming that the unit maintains reliable communication with the vehicle’s security system without triggering error codes or intermittent faults.
Installation experiences vary slightly depending on the vehicle model and the owner’s mechanical aptitude. For the S2000, the process typically involves careful removal of the door card and moisture barrier, requiring patience to avoid damaging fragile clips. An Insight owner shared, “The entire replacement took about 90 minutes working at a leisurely pace, with most time spent aligning the actuator rod perfectly.” The inclusion of detailed mounting points and pre-threaded bolt holes reportedly simplifies positioning, though some recommend testing the mechanism before fully securing the unit to ensure proper alignment with the strike plate. Those attempting the installation for the first time are advised to consult workshop manuals for torque specifications and wiring diagrams to avoid over-tightening fasteners or pinching cables.
Environmental sealing is another aspect where this aftermarket part demonstrates thoughtful design. The actuator’s housing incorporates rubber grommets and a tight seam that multiple users have credited with preventing water ingress – a common failure point in door-mounted electronics. “After two rainy seasons, there’s no sign of moisture inside the unit,” reported one driver from the UK’s South West, where road spray and humidity pose constant challenges. This weather resistance proves crucial in maintaining consistent operation, particularly in convertibles like the S2000 where door components are more exposed to the elements.
Comparative analysis with generic alternatives reveals distinct advantages in the 72115-S5A-003’s performance consistency. Several automotive forums feature discussions where owners contrast this OEM-specification part with cheaper replicas, often concluding that “the genuine article’s tolerances make a noticeable difference in smoothness of operation.” The precision-moulded gears and calibrated spring tension reportedly result in quieter operation and reduced strain on the vehicle’s locking system compared to aftermarket equivalents. One enthusiast noted, “It’s reassuring to hear the same solid thunk I remember from when the car was new,” highlighting how the actuator contributes to preserving the vehicle’s original character.
In terms of maintenance requirements, the consensus suggests that this component benefits from occasional checks during routine servicing. Owners who perform annual inspections recommend cleaning electrical contacts with contact cleaner and verifying that mounting bolts remain securely fastened. A preventative approach appears wise, given that some users reported gradual performance degradation over several years before eventual failure. However, multiple installers have emphasised that “when properly aligned and lubricated during installation, the actuator feels like it could last another decade,” suggesting that initial setup quality significantly impacts longevity.
The actuator’s role in vehicle security adds another layer of importance to its reliable function. Owners appreciate that the unit maintains seamless integration with factory alarm systems and keyless entry modules. There’s particular praise for how the replacement part restores the confidence-inspiring feedback of a fully operational locking mechanism. As one user put it, “Knowing my doors lock with that definitive Honda precision gives peace of mind during urban driving or overnight parking.” This reliability extends to cold weather performance, with multiple reports of consistent operation even during sub-zero temperatures that typically challenge plastic components.
For those considering this replacement part, it’s advisable to inspect the door latch mechanism itself during installation. Several experienced mechanics note that “actuator failures sometimes coincide with worn latch springs or stiff pivots,” recommending a thorough clean and lubrication of the entire assembly while access is available. This holistic approach to door lock maintenance ensures that the new actuator operates under optimal conditions, potentially extending its service life beyond that of the original factory component.
In summary, the 72115-S5A-003 Front Right Power Door Plastic Lock Latch Actuator stands as a credible solution for Honda S2000 and Insight owners seeking to restore their vehicle’s door locking functionality to factory standards. Its precise engineering, coupled with straightforward installation characteristics, makes it a practical choice for both DIY enthusiasts and professional technicians. While the plastic gear train necessitates careful installation and periodic maintenance, numerous real-world accounts confirm that with proper care, this component delivers reliable performance that honours Honda’s reputation for durable electrical systems. For those committed to preserving their vehicle’s original specifications and operational feel, this actuator represents a logical investment in both convenience and long-term ownership satisfaction.
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