<SEC-DOCUMENT>0000807249-21-000044-index.html : 20210316
<SEC-HEADER>0000807249-21-000044.hdr.sgml : 20210316
<ACCEPTANCE-DATETIME>20210316160000
ACCESSION NUMBER:		0000807249-21-000044
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210316
DATE AS OF CHANGE:		20210316

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMPCO PITTSBURGH CORP
		CENTRAL INDEX KEY:			0000006176
		STANDARD INDUSTRIAL CLASSIFICATION:	PUMPS & PUMPING EQUIPMENT [3561]
		IRS NUMBER:				251117717
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-08805
		FILM NUMBER:		21745587

	BUSINESS ADDRESS:	
		STREET 1:		726 BELL AVENUE
		STREET 2:		SUITE 301
		CITY:			CARNEGIE
		STATE:			PA
		ZIP:			15106
		BUSINESS PHONE:		412-456-4400

	MAIL ADDRESS:	
		STREET 1:		726 BELL AVENUE
		STREET 2:		SUITE 301
		CITY:			CARNEGIE
		STATE:			PA
		ZIP:			15106

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SCREW & BOLT CORP OF AMERICA
		DATE OF NAME CHANGE:	19710518

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GAMCO INVESTORS, INC. ET AL
		CENTRAL INDEX KEY:			0000807249
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				133056041
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		ONE CORPORATE CENTER
		CITY:			RYE
		STATE:			NY
		ZIP:			10580-1434
		BUSINESS PHONE:		9149215000

	MAIL ADDRESS:	
		STREET 1:		ONE CORPORATE CENTER
		CITY:			RYE
		STATE:			NY
		ZIP:			10580

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GABELLI ASSET MANAGEMENT INC ET AL
		DATE OF NAME CHANGE:	20020828

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GABELLI FUNDS INC ET AL
		DATE OF NAME CHANGE:	19940714
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>ap_49.htm
<TEXT>
Document 1 - file: ap_49.htm

</DOCUMENT>
</SEC-DOCUMENT>