EURORELIC

13 51 1 256 543 –Regulator warm-up-phase – tii [prod. Feb '71 - Jun '78]

NLA newchecked 2026-10-08source: bmwfans.infomarket: ETK flag only (not listed at US dealer; EU not checked)

BMW part number 13 51 1 256 543 (13511256543) is the Regulator warm-up-phase – tii [prod. Feb '71 - Jun '78], a fuel part catalogued for the 02 (2002tii, 2000tii), E12 (520i). As of our last check (2026-10-08, bmwfans.info), BMW lists it as no longer available new (NLA). 1 repair guide below.

⚠ Safety-critical part. Have a qualified mechanic verify fitment and installation before driving.
  1. 1 New from BMW
    No longer available new (per source; may be market-specific).
  2. 2 Aftermarket new
    No sourced aftermarket equivalent yet
  3. 3 Used / NOS
    Search live listings on eBay US/DE.
  4. 4 Interchange
    No cross-model match in our data
  5. 5 Kit / reman
    None recorded yet
  6. 6 Community fix
    No forum workaround recorded yet
  7. 7 DIY guide
    1 repair how-to linked (forum, article, video)
  8. 8 Paid hunt
    We search dealers, breakers and forums for you.

Buy new

Not available new according to the status source (a US dealer). NLA can be market-specific, so try the other region below.

View 13511256543 at bmwfans.infoCross-reference 13511256543 on RealOEMCatalog diagram (bmwfans.info)

Aftermarket options (0)

No sourced aftermarket equivalent recorded yet. We only list brand numbers that a brand catalog or vendor page explicitly cross-references to this BMW number.

Where to buy

Every link opens 13511256543 at that seller: “View” = the part’s own page, “Look up” = the seller’s part-number page, “Search” = the seller’s search pre-filled with the number. You can order from either region.

United States

Europe (DE · UK · DK)

“Ships internationally” is shown only where we read it on the vendor’s own shipping page (checked 2026-09-28); otherwise check with the vendor. Import duties and taxes are the buyer’s responsibility. Amazon links carry our Associates tag, so we may earn a commission; other seller links are not affiliate links today.

Used & NOS listings

Cross-model interchange (0)

No interchange recorded. That doesn't prove there isn't one; it means we have no sourced match yet.

Listed directly for 02 and E12 in our data (see Fits). Models below are other listings of the same number.

Community fixes (0)

No forum workaround recorded yet. If you know a thread, the hunt team wants to hear about it.

Kits, reman & retrofits (0)

No kit or reman service recorded yet.

DIY

No DIY route recorded yet.

Repair guides & how-tos (1)

Write-ups and videos from owners, forums and specialists on removing and fitting this part. Summaries are ours; follow the link for the full steps, photos and torque values, and credit goes to the original author. Safety-critical part: have a qualified mechanic check the work.

Forum DIY2002FAQDifficulty: Hardwritten for 02

Kugelfischer Warm-Up Regulator Repair Kit Instructions ↗

Step-by-step for rebuilding the tii warm-up regulator with a new wax actuator and water-seal O-ring. It covers calibrating the air cone height before refitting, re-engaging the enrichment lever and setting the top-hat washer gap without touching the 'verboten' screw, then rechecking idle through a warm-up cycle.

Tools mentioned: Pin wrench, 2 mm Allen key, retainer plate (in kit), sockets

2002FAQ is behind a Cloudflare challenge; read via search-engine copy. The kit is sold by the 2002FAQ store.

bmw2002faq.com· link checked 2026-10-08 · read via search-engine copy (forum blocks direct access)

Notes & sources

Not listed on bmwpartsdeal (US); ETK data on bmwfans flags 'Delivery discontinued by the factory'. SAFETY-CRITICAL (brakes/steering/fuel/airbag): have a qualified mechanic verify fitment and installation.