EURORELIC

13 63 1 271 662 –Regulator warm-up-phase [prod. Aug '79 - Jan '13]

NLA newchecked 2026-10-08source: bmwpartsdeal.commarket: US (EU: not checked)

BMW part number 13 63 1 271 662 (13631271662) is the Regulator warm-up-phase [prod. Aug '79 - Jan '13], a fuel part catalogued for the E21 (318i, 320i), E12 (518i). As of our last check (2026-10-08, bmwpartsdeal.com), BMW lists it as no longer available new (NLA). Interchange records list it on E28 as well. 2 repair guides 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
    Same BMW number listed on 1 other chassis
  5. 5 Kit / reman
    None recorded yet
  6. 6 Community fix
    No forum workaround recorded yet
  7. 7 DIY guide
    2 repair how-tos 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 (US checked). NLA can be market-specific, so try the other region below.

View 13631271662 at bmwpartsdeal.comCross-reference 13631271662 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 13631271662 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 (1)

Listed directly for E21 and E12 in our data (see Fits). Models below are other listings of the same number.

Same part numberCatalog matchbmwfans.info

Same BMW part number listed for this model in catalog data. Not a physical fit test.

E28
518i M10

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 (2)

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 DIYe21.tricord.be (BMW E21 Community)Difficulty: Mediumwritten for E21

Tech Forum: CIS (K-Jetronic) troubleshooting FAQ ↗

Forum FAQ post on troubleshooting the E21's K-Jetronic injection. It traces hard cold starts to a dirty or misadjusted warm-up regulator and hard warm starts to leaks that lower rest pressure. It also lists the 1980-83 control, system and rest-pressure specs and explains how to clean the regulator and make it adjustable instead of replacing it.

Tools mentioned: CIS fuel pressure test kit

Thread title on the site is the post number ('14510').

e21.tricord.be· link checked 2026-10-08
ArticleBMW Club CZ (document library)Difficulty: Hardwritten for E21

Disassembly and Reassembly of a Bosch Warm up Regulator (1977 320i) ↗

A 12-page owner guide (PDF) to taking apart, cleaning and reassembling the K-Jetronic warm-up regulator from a 1977 320i. It warns that Bosch doesn't treat the part as rebuildable, that the tolerances are tight and that control pressures can shift, so confirm the fault with a pressure gauge first and keep a spare regulator on hand.

Tools mentioned: Flat screwdrivers, needle-nose pliers, 10 mm socket, carb cleaner, K-Jet pressure gauge

Download page verified; the guide itself is a PDF hosted by the club.

by Steven Hauer · en.bmw-club.cz· link checked 2026-10-08

Notes & sources

Last listed $535.46 on bmwpartsdeal (not orderable). SAFETY-CRITICAL (brakes/steering/fuel/airbag): have a qualified mechanic verify fitment and installation.