4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543
4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 are high-impedance fuel injectors priced at $44.92. E85-compatible and direct-fit for Nissan SR20DET, RB25DE/T, and KA24DE engines, they’re ideal for performance upgrades in S13, S14, S15, R33, and Z32 models without harness modifications.
● In stock
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Key features
- Side-feed, high-impedance design
- E85 compatible for ethanol blends
- Direct fit, no harness changes needed
- Drop-in for SR20DET, RB25DE/T, KA24DE
- Set of 4 new 555cc fuel injectors
- Matches OEM 16600-RR543 spec
- Front-mounted engine placement
Pros
- +Affordable performance upgrade
- +No wiring harness modifications
- +Works with E85 fuel blends
- +Plug-and-play installation
- +New, not remanufactured
Cons
- −Limited to side-feed compatible models
- −Not for extreme high-horsepower builds
About 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543
What is 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543?
The 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 are a set of four brand-new, high-impedance, side-feed fuel injectors designed as a direct replacement for Nissan vehicles requiring the 16600-RR543 OEM specification. Rated at 555cc (often referenced as 615cc equivalent), these injectors support increased horsepower and are especially suited for tuned or boosted engines. They are 100% new, not remanufactured, and built to deliver consistent fuel atomization and reliable performance under high-demand conditions.
Key features
- Type — Side-feed, high-impedance/saturated design for stable operation.
- E85 Compatible — Safe for use with ethanol blends up to E85.
- Direct Fit — No wiring harness modifications required.
- Drop-In Replacement — Compatible with SR20DET, RB25DE/T, KA24DE platforms.
- Set of 4 — Complete kit for 4-cylinder and 6-cylinder Nissan engines.
- Interchange Numbers — Matches 16600RR543, FJ942, SF-61-550CC, and more.
- Vehicle Placement — Front-mounted installation on engine fuel rail.
Who is 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 for?
These injectors are ideal for Nissan enthusiasts restoring or modifying S-chassis (S13/S14/S15), R33 Skyline, Z32 300ZX, and other compatible models. DIY mechanics and tuners seeking a cost-effective, plug-and-play upgrade for forced-induction or high-compression builds will benefit most. They’re especially valuable when upgrading beyond stock power levels but not ready for rail-mounted or top-feed conversions.
How does 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 compare?
Compared to stock 370cc or 440cc side-feed injectors, these 555cc units deliver higher flow for turbocharged or nitrous-assisted setups. Unlike universal or aftermarket rail systems, they maintain factory harness compatibility. They outperform standard polypropylene fuel injectors in durability and flow consistency, especially on E85. However, they are not as high-flowing as 1000cc+ top-feed injectors used in extreme builds, making them a mid-tier performance solution.
Best use cases
- →Turbocharged SR20DET swaps
- →R33 Skyline GTS-t tuning
- →S14/S15 Silvia performance builds
- →Z32 300ZX engine upgrades
- →E85 conversion on Nissan engines
Is 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 right for you?
Buy these injectors if you're upgrading a Nissan with a side-feed fuel system and need more fuel delivery for forced induction or higher compression. Ideal for intermediate DIYers with basic mechanical skills. Not for top-feed or rail-modified engines. Consider higher-flow injectors if exceeding 400+ whp.
How it compares: These 555cc side-feed injectors offer better flow than stock units and maintain OEM compatibility, unlike universal rail kits. They’re more affordable than high-end top-feed systems but less capable than 800cc+ injectors for extreme builds.
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What vehicles are these 555cc injectors compatible with?
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They fit Nissan S13, S14, S15 with SR20DET, R33 Skyline RB25DE/T, KA24DE engines, and Z32 Fairlady. Designed as direct replacements for OEM 16600-RR543 side-feed systems without harness changes.
Are these fuel injectors E85 compatible?
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Yes, these 555cc side-feed injectors are E85 compatible, making them suitable for ethanol fuel blends. They resist corrosion and maintain performance under high ethanol content conditions.
Do I need to modify my wiring harness?
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No, these are plug-and-play injectors. They use the factory-side feed connectors and require no wiring harness modifications for installation on compatible Nissan models.
Is this a set of 4 new injectors?
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Yes, this is a set of 4 brand-new 555cc side-feed fuel injectors. They are not remanufactured or used, ensuring reliable performance and longevity.
Can I use these for a high-horsepower build?
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These injectors support moderate power increases, ideal for builds up to ~350 whp. For higher horsepower, consider 800cc+ top-feed systems instead.
How much does 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 cost?
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4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 is $44.92 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 in stock at Lab Work Auto?
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Yes, 4PCS NEW 555cc Side FUEL INJECTORS for NISSAN 16600-RR543 is currently in stock at Lab Work Auto.
Specifications
- SKU
- F8-011899