1989-1998 Nissan 240SX S13/S14 Radiator Core Supports: Whole Assembly, Production Splits and Structural Boundaries

Checked service relationships are S13 62500-40F00 -> 62500-53F00, 62520-40F00 -> 62520-53F00, 62521-40F00 -> 62521-53F00 and 62530-40F25 -> 62530-53F25; S14 62500-65F10 -> 62500-70F00 and 62530-65F00 -> 62530-70F00. The S13 62510-40F00 versus 62510-53F00 upper-support break and the S14 early 65F/70F versus late 80F whole/side-support break are production branches, not automatic cross-fit arrows. No S13-to-S14, early-to-late S14, US-to-JDM, zenki-to-kouki conversion, complete-to-section or front-clip interchange is asserted.

Begin with both 17-character VINs/build dates, US/LHD S13 or S14 body, exact production month and the installed complete/upper/lower/RH/LH identity. The S13 upper-support catalog changes at 07/1990; the S14 whole and side supports change at 07/1996. Do not use zenki, kouki or Silvia conversion shorthand as fitment proof. Itemize whether a listing is a bare complete support, a single section or a cut front clip, and whether it includes hood latch/brackets, lamp/fascia mounts, radiator/condenser/fan mounts, air guides, wiring, fasteners or adjacent apron/rail material; none is presumed. Preserve SCH-0052/SCH-0054 fascia and bumper-reinforcement ownership and SCH-0062 suspension-crossmember ownership. Require actual-piece photos, straightness/body measurements, attachment-flange and weld evidence, corrosion/fire/flood history, prior repair disclosure, packaging, freight-damage terms and returns. Reject bent or stretched pickup points, torn/cracked spot-weld flanges, severe corrosion, hidden filler, prior pulling/sectioning, improvised brackets and an unmeasured donor cut. Nissan body-repair material is intended for skilled collision technicians with proper tools and includes core-support replacement operations. This public guide gives no drill, cut, weld, heat, pull, section or alignment procedure. Use a qualified collision-repair professional, current body dimensions and repair information, corrosion protection and final hood/latch/lamp/fender/cooling-system alignment and leak/road acceptance.

Humble Engineering displayed a $225 made-to-order lower support intended for modified swap/tube-front use; it is not a complete OEM support, factory supersession or proof of structural equivalence. Vega displayed an S14 Series 2 support path with contradictory Sold out and 9 in stock language, so availability is unreliable and its market wording does not prove US fitment. Z1's exact late-S14 OEM path was unavailable. Imported/JDM, conversion and cut-front-clip listings require exact recipient geometry and professional structural review; none is endorsed as universal interchange.

US/LHD S13/S14 240SX only. Match both VINs/builds, generation, production month, complete-versus-section identity and body dimensions; the S14 whole/side support changes at 07/1996. Do not infer JDM, nose-conversion, front-clip, S13/S14 or early/late interchange. Reject unmeasured cuts, bent/stretched mounts, torn weld flanges, severe corrosion and prior pull/section repair. This guide gives no structural repair procedure; use a qualified collision shop and current body-repair information.

Supersede reviewed 15 unique research sources for this guide. 2 also appear above as a seller or official action and are not repeated here; 13 additional citations follow.

Research last verified 2026-08-06.

1. Nissan Parts Deal — front apron radiator core supportOpen source
2. Nissan Parts Deal — front apron radiator core supportOpen source
3. Nissan Parts Deal — front apron radiator core supportOpen source
4. Nissan Parts Deal — front apron radiator core supportOpen source
5. Nissan Parts Deal — front apron radiator core supportOpen source
6. Nicoclub — service manualOpen source
7. Manualmachine — 27173357 body repair manualOpen source
8. Books google — Nissan 240SXOpen source
9. Nissan Parts Deal — nissan support assy ra 62500 53f00Open source
10. Nissan Parts Deal — nissan support assy ra 62500 70f00Open source
11. Nissan Parts Deal — nissan support assy ra 62500 80f00Open source
12. Z1 Motorsports — oem front s14 kouki radiator core support p 8986Open source
13. Vegaautosports — radiator support panel to suit nissan silvia s14 series 2Open source