Cap, Bleeder Plug(FOR FRONT DISC BRAKE)

31478-50020

Superseded / ended 2022-08 PNC 31478B General

Fitment

Codes the factory prints against this line. Hover for the catalogue's own expansion.

ZWE21#

Fits: Corolla Sed (JPP) MZEA1#,ZRE212,ZWE21#
Valid: 2020-04 → 2022-08
Model period: 837W
Destination †: 02
Catalogue page †

† Read from the record layout but confirmed by no published legend.

Shown on

Figure 47B666D Figure 47B667D

Replacement history

Follow the number forward to what a dealer would supply today:

31478-50020 31478-0R010 31478-50020

The chain loops back on itself in the source data and is cut here.

Replaces

31478-0R010 31478-0R010 31478-0R010 31478-0R010 31478-0R010 31478-0R010 31478-0R010 31478-0R010 31478-0R010 31478-06010 31478-06010 31478-06010 31478-06010 31478-06010 31478-06010 31478-06010 31478-06010 31478-0R010 31478-06010 31478-0R010 31478-0R010 31478-06020 31478-06010 31478-06010

Interchangeable numbers

Number	Alternative	Effective
31478-42010	31478-50020	2011-01

Other lines in this group

Part number	Period	Status
31478-30010	2024-09 → 2025-07	Superseded / ended 2025-07
31478-30010	2024-09 → —	Current
31478-30010	2019-01 → 2020-04	Superseded / ended 2020-04
31478-50020	2019-01 → 2020-04	Superseded / ended 2020-04
31478-30010	2020-04 → 2022-08	Superseded / ended 2022-08
31478-30010	2022-09 → 2023-07	Superseded / ended 2023-07
31478-30010	2022-09 → 2024-09	Superseded / ended 2024-09

List price

Not priced in this market.

Only the Japanese dataset ships a price file. Add the part to an enquiry to ask a seller for a quote.

This number everywhere

Every vehicle in every market that takes 31478-50020.

Show all applications

No quantity, deliberately

The factory catalogue records which parts a vehicle takes, never how many. Quantity was always typed in by the parts counter when raising an order, so nothing here can tell you whether you need one or four.