Baldwin P42 cross reference
Manufacturer numbers Baldwin lists P42 as the replacement for
Baldwin lists P42 as the replacement for these manufacturer part numbers:
| Manufacturer | Their part number |
|---|---|
| ACDELCO | AC462C |
| ACDELCO | C206 |
| ACDELCO | AC114 |
| ACDELCO | K17 |
| (manufacturer not verified) | 106338 |
| (manufacturer not verified) | S106338 |
| (manufacturer not verified) | TD600L4000 |
| (manufacturer not verified) | 162059708 |
| (manufacturer not verified) | 220026 |
| (manufacturer not verified) | 2200266 |
| (manufacturer not verified) | 2200269 |
| (manufacturer not verified) | 4613117 |
| (manufacturer not verified) | 46131170 |
| (manufacturer not verified) | 4503973 |
| (manufacturer not verified) | 45039735 |
| (manufacturer not verified) | 70220026 |
| (manufacturer not verified) | B3972 |
| (manufacturer not verified) | B3973 |
| (manufacturer not verified) | 75613117 |
| (manufacturer not verified) | 212E2550 |
| (manufacturer not verified) | 291E1728 |
| (manufacturer not verified) | 291E1758 |
| AMERICAN PARTS | 602 |
| (manufacturer not verified) | 92021 |
| (manufacturer not verified) | 162059708 |
| AP FILTERS | AP3485 |
| AP FILTERS | AP3189 |
| AP LOCKHEED | AP3174A |
| AP LOCKHEED | AP3189 |
| AP LOCKHEED | AP3189A |
| AP LOCKHEED | AP3485 |
| AP LOCKHEED | AP3485A |
| AP LOCKHEED | AP3271 |
| AP LOCKHEED | AP3271A |
| AP LOCKHEED | AP94A |
| AP LOCKHEED | LK3485 |
| AP LOCKHEED | LK3271 |
| APCO | AP30 |
| (manufacturer not verified) | 815958 |
| (manufacturer not verified) | 10300477 |
| ATLAS COPCO | 97125402 |
| ATLAS COPCO | 9709003400 |
| (manufacturer not verified) | 815958 |
| (manufacturer not verified) | 2ZJ0611 |
| (manufacturer not verified) | 2ZJ0807 |
| (manufacturer not verified) | P2677 |
| (manufacturer not verified) | 944700123 |
| BIG A FILTER | 602 |
| BIG A FILTER | 92021 |
| BIG A FILTER | 92239 |
| (manufacturer not verified) | 702167 |
| BOSCH | 1457429181 |
| BOSCH | 1457429245 |
| BOSCH | 1457429160 |
| BOSCH | 1457429162 |
| BOSCH | 1457431356 |
| BOSCH | 1457431480 |
| BOSCH | 1457431481 |
| BOSCH | 1457431485 |
| BOSCH | 24HE |
| BOSCH | 4006HE |
| BOSCH | 4131HE |
| BOSCH | 4141HE |
| BOSCH | 9457240060 |
| BOSCH | 9457241310 |
| BOSCH | 9457241410 |
| BOSCH | 9457200240 |
| BOSCH | FJSJ24P92Z |
| BOSCH | P9181 |
| (manufacturer not verified) | BC5 |
| (manufacturer not verified) | B45 |
| BRIGGS & STRATTON | B45 |
| BRIGGS & STRATTON | BC5 |
| (manufacturer not verified) | B45 |
| (manufacturer not verified) | BC5 |
| BUDA | 220026 |
| BUDA | 2200266 |
| BUDA | 2200269 |
| (manufacturer not verified) | 5572425 |
| BUDA | 4503973 |
| BUDA | 45039735 |
| BUDA | 4613117 |
| BUDA | 46131170 |
| BUDA | 70220026 |
| BUDA | B3972 |
| BUDA | B3973 |
| BUDA | 75613117 |
| (manufacturer not verified) | 8802842 |
| (manufacturer not verified) | 766365 |
| (manufacturer not verified) | 801160151 |
| (manufacturer not verified) | 801160161 |
| CARQUEST | 85021 |
| CARQUEST | 85239 |
| (manufacturer not verified) | 103261R91 |
| (manufacturer not verified) | 295012001 |
| (manufacturer not verified) | 105687H1 |
| (manufacturer not verified) | 66U12921 |
| CASE | 205739H1 |
| CASE | A28008 |
| CASE | A8722 |
| CASE | TF400 |
| CATERPILLAR | 636372 |
| (manufacturer not verified) | M30 |
| (manufacturer not verified) | P30 |
| (manufacturer not verified) | 1268821 |
| (manufacturer not verified) | 1269483 |
| (manufacturer not verified) | 1274834 |
| (manufacturer not verified) | 1274838 |
| CHRYSLER | 75065398 |
| CLAAS | 133031 |
| CLARK EQUIPMENT | 880049 |
| (manufacturer not verified) | 60369 |
| (manufacturer not verified) | 60389 |
| CLARK EQUIPMENT | 869668 |
| CLARK EQUIPMENT | 869688 |
| CLARK EQUIPMENT | 940034 |
| CLARK EQUIPMENT | 951472 |
| CLARK EQUIPMENT | 951475 |
| CLARK EQUIPMENT | TD600L4000 |
| CLEAN FILTERS | ML418 |
| CO-OP | PL30P |
| CO-OP | PL40W |
| CONTINENTAL | HD260L5010 |
| CONTINENTAL | M330L500 |
| CONTINENTAL | M600L4110 |
| CONTINENTAL | M600L5010 |
| CONTINENTAL | M600L5101 |
| (manufacturer not verified) | T427L5000 |
| (manufacturer not verified) | TD500L5000 |
| (manufacturer not verified) | TD600L301 |
| (manufacturer not verified) | TD600L400 |
| (manufacturer not verified) | TD600L4000 |
| (manufacturer not verified) | TD600L5000 |
| (manufacturer not verified) | TH227L5010 |
| (manufacturer not verified) | TH427L202 |
| (manufacturer not verified) | TH427L5010 |
| (manufacturer not verified) | U501L5000 |
| CONTINENTAL | RD6L5030 |
| CONTINENTAL | SD30453 |
| CONTINENTAL | T427L303 |
| CONTINENTAL | T427L403 |
| COOPERS | AZL022 |
| COOPERS | AZL136 |
| COOPERS | GP2 |
| COOPERS | LEB5040 |
| COOPERS | G855 |
| (manufacturer not verified) | 12P51 |
| CROSLAND | 316 |
| CROSLAND | 477 |
| CROSLAND | 9323 |
| CYCLONE | PM30 |
| CYCLONE | PM155 |
| (manufacturer not verified) | PMX30N |
| DELUXE | 42 |
| DELUXE | WD42 |
| DEMAG | 26929540 |
| DEMAG | 440560 |
| DEUTZ | 1168469 |
| (manufacturer not verified) | 1168467 |
| (manufacturer not verified) | 1168468 |
| DIAMOND REO | 21415W |
| DIAMOND REO | N23580A |
| DIAMOND REO | 216763 |
| DIAMOND REO | P2677 |
| DIAMOND REO | 328A6 |
| (manufacturer not verified) | 1319A6 |
| DIAMOND REO | 1653A6 |
| (manufacturer not verified) | DX35 |
| (manufacturer not verified) | 47652CS |
| DONALDSON | P550300 |
| DONALDSON | P779010 |
| DONALDSON | P779012 |
| DONALDSON | P779034 |
| DONALDSON | P779058 |
| (manufacturer not verified) | 411121 |
| (manufacturer not verified) | 411121T |
| DONIT | 4910014 |
| FACET | 1168469 |
| FAHR | P3H4120 |
| (manufacturer not verified) | 2113 |
| (manufacturer not verified) | 310284 |
| (manufacturer not verified) | 794367 |
| (manufacturer not verified) | 1B6402 |
| (manufacturer not verified) | FA4136 |
| (manufacturer not verified) | FA41612A |
| FIAAM | FB1277 |
| FIAAM | FB1277A |
| FIAAM | FB3140 |
| FIAT | 1168466 |
| FIAT | 1168467 |
| FIAT | 1168468 |
| FIAT | 1168469 |
| FIAT | 220026 |
| FIAT | 4613117 |
| FIAT | 4503973 |
| FIAT | 70220022 |
| FIAT | 70220026 |
| FIAT | 70025725 |
| FIAT | 74503973 |
| FIAT | 74613117 |
| FIAT | 75613117 |
| FIAT | B3972 |
| FIAT | B3973 |
| FIAT | 8503214 |
| FIAT | 82171900 |
| FIAT | 8809707 |
| FIAT | 897229 |
| (manufacturer not verified) | FL35M |
| FILGA | FF35 |
| (manufacturer not verified) | FF50E |
| (manufacturer not verified) | BP534 |
| (manufacturer not verified) | BP582 |
| (manufacturer not verified) | MF534 |
| (manufacturer not verified) | MF638 |
| (manufacturer not verified) | MF638BER |
| (manufacturer not verified) | FCL7123 |
| (manufacturer not verified) | FCL7307 |
| (manufacturer not verified) | FCL7251 |
| (manufacturer not verified) | K35 |
| FINN FILTER | FFP68 |
| FINN FILTER | FFP14 |
| FINN FILTER | FFP32 |
| (manufacturer not verified) | LI4062 |
| FISPA | FOS812 |
| FLEETGUARD | LF3357 |
| FLEETGUARD | LF540 |
| FLEETGUARD | LF572 |
| FLEETRITE | LFR83357 |
| FLEETRITE | LFR8540 |
| FLEETRITE | LFR8572 |
| (manufacturer not verified) | QC30 |
| FORD MOTOR | 11TS18658B |
| FORD MOTOR | 11W18658 |
| FORD MOTOR | 11W18658A |
| FORD MOTOR | 11W18658B |
| FORD MOTOR | 11W18660 |
| FORD MOTOR | 11W18662 |
| FORD MOTOR | 11W18662B |
| FORD MOTOR | 11W18662W |
| FORD MOTOR | 11W18697 |
| FORD MOTOR | 21TS18658B |
| FORD MOTOR | 5000885 |
| FORD MOTOR | 5000890 |
| FORD MOTOR | 5012316 |
| FORD MOTOR | 5011431 |
| FORD MOTOR | 51T6725A |
| FORD MOTOR | 51T67275A |
| FORD MOTOR | 5011475 |
| FORD MOTOR | 8EL6714C |
| FORD MOTOR | 8EL6714C1 |
| FORD MOTOR | 8MB6714A |
| FORD MOTOR | 8MB6744 |
| FORD MOTOR | 8RWS6714 |
| FORD MOTOR | A730X6744L2A |
| FORD MOTOR | A730X6744RA |
| FORD MOTOR | 8WS6714 |
| FORD MOTOR | A7TN6731A |
| FORD MOTOR | A7TW6731A |
| FORD MOTOR | A830X6731RA |
| FRAM | C148 |
| FRAM | C30 |
| FRAM | C301 |
| FRAM | C30P |
| FRAM | C30PL |
| FRAM | C8731 |
| FWD CORP. | 10375022 |
| (manufacturer not verified) | 483407 |
| (manufacturer not verified) | 636372 |
| (manufacturer not verified) | 1505310 |
| (manufacturer not verified) | 1595361 |
| (manufacturer not verified) | 1595410 |
| (manufacturer not verified) | 1595508 |
| (manufacturer not verified) | 2090647 |
| (manufacturer not verified) | 2221767 |
| (manufacturer not verified) | 2233193 |
| (manufacturer not verified) | 2233219 |
| (manufacturer not verified) | 2244062 |
| (manufacturer not verified) | 2244699 |
| (manufacturer not verified) | 3653146 |
| (manufacturer not verified) | 3694160 |
| (manufacturer not verified) | 3694840 |
| (manufacturer not verified) | 5572503 |
| (manufacturer not verified) | 5574213 |
| (manufacturer not verified) | 5573136 |
| (manufacturer not verified) | 724401 |
| (manufacturer not verified) | G31 |
| GOULD | P155 |
| GOULD | P30 |
| (manufacturer not verified) | X175N |
| (manufacturer not verified) | X30N |
| (manufacturer not verified) | EQ305 |
| GRAINGER | 4ZLD8 |
| GREYFRIARS | 628P |
| GREYFRIARS | 628P1 |
| GUD FILTERS | GP6 |
| GUD FILTERS | GP2 |
| GUD FILTERS | G855 |
| GUIOT | GE3002 |
| GUIOT | GE3003 |
| GUIOT | GE3004 |
| GUIOT | GE3005 |
| GUIOT | GE3100 |
| GUIOT | GE873 |
| (manufacturer not verified) | 172066112 |
| (manufacturer not verified) | 172066122 |
| (manufacturer not verified) | 5125420100 |
| (manufacturer not verified) | 512542100 |
| (manufacturer not verified) | 5125421000 |
| (manufacturer not verified) | 5985420100 |
| HASTINGS | LF103 |
| HENGST | E200M |
| HENGST | E200M1 |
| HENGST | E2014 |
| HENGST | E201499 |
| HENGST | E20225 |
| HENGST | H2014 |
| HERCULES | 17256CS |
| HERCULES | 42740BS |
| HERCULES | 47240CS |
| HERCULES | 47250BS |
| HERCULES | 47352B |
| HERCULES | 47652CS |
| HERCULES | HC47652CS |
| HERCULES | HS47652CS |
| (manufacturer not verified) | RC6383 |
| (manufacturer not verified) | 509025 |
| HOUGH | 205739H1 |
| (manufacturer not verified) | 105687 |
| (manufacturer not verified) | 105687H1 |
| HUTCHENS | S35 |
| HYSTER | 50666 |
| HYSTER | 70411R1 |
| (manufacturer not verified) | 114029HY |
| (manufacturer not verified) | 103261R91 |
| (manufacturer not verified) | 105687H1 |
| (manufacturer not verified) | 105867 |
| (manufacturer not verified) | 105867H1 |
| HARVESTER | 205739H1 |
| HARVESTER | 70410R91 |
| (manufacturer not verified) | 59987081 |
| (manufacturer not verified) | 1168469 |
| IVECO | 70025725 |
| IVECO | 74651047 |
| (manufacturer not verified) | 40600491 |
| (manufacturer not verified) | 40600494 |
| (manufacturer not verified) | 40700433 |
| (manufacturer not verified) | 724401 |
| (manufacturer not verified) | 801161151 |
| (manufacturer not verified) | 512086094 |
| (manufacturer not verified) | 5125421000 |
| KENWORTH | P2677 |
| (manufacturer not verified) | 1168467 |
| (manufacturer not verified) | 1168468 |
| (manufacturer not verified) | E120 |
| (manufacturer not verified) | E1200 |
| (manufacturer not verified) | E1203 |
| KNECHT | EN1120 |
| KNECHT | EN120 |
| KNECHT | EN1203 |
| KNECHT | EN1205 |
| KNECHT | EN1208 |
| KNECHT | EN313 |
| KNECHT | EN330 |
| KNECHT | EN363 |
| KNECHT | EN3631 |
| KNECHT | EN3632 |
| KNECHT | EN3633 |
| KNECHT | ENC320 |
| KNECHT | ENC3201 |
| KNECHT | OX30 |
| KNECHT | OX80 |
| KRALINATOR | K575 |
| KRALINATOR | K939 |
| (manufacturer not verified) | L30 |
| (manufacturer not verified) | 35 |
| LEDERER | 35 |
| LEE | L35 |
| LEYLAND | 607488 |
| LEYLAND | 22L2252 |
| LEYLAND | 237373 |
| LEYLAND | 237473 |
| LEYLAND | 238373 |
| LEYLAND | ABU8050 |
| LEYLAND | ZZL2252 |
| LUBER-FINER | LM30 |
| LUBER-FINER | LM66 |
| LUBER-FINER | LP2236 |
| LUBER-FINER | LP30 |
| LUCAS | N016 |
| M FILTER | MO165P |
| M FILTER | MO167P |
| M FILTER | MO104P |
| M FILTER | MO105P |
| M FILTER | P10561X |
| M.A.N. | 81055040008 |
| M.A.N. | 81055040019 |
| (manufacturer not verified) | 366E10402 |
| M.A.N. | 81055046008 |
| M.A.N. | 88801161118 |
| M.A.N. | 90801161188 |
| MACK | 236GB217 |
| MACK | 236GB223 |
| MACK | 236GB233 |
| MACK | 43SB32 |
| MAHLE | OX80 |
| MAHLE | OX30 |
| (manufacturer not verified) | H1053N |
| (manufacturer not verified) | P10561X |
| (manufacturer not verified) | PF1015N |
| (manufacturer not verified) | PF1025N |
| (manufacturer not verified) | PF1195 |
| MASSEY FERGUSON | 1004895 |
| MASSEY FERGUSON | 1004895M1 |
| MASSEY FERGUSON | 1009064 |
| MASSEY FERGUSON | 764455 |
| MASSEY FERGUSON | 764455M91 |
| MASSEY FERGUSON | 764457 |
| MASSEY FERGUSON | 764457M91 |
| MASSEY FERGUSON | 840870 |
| (manufacturer not verified) | D63 |
| (manufacturer not verified) | D64 |
| (manufacturer not verified) | 1846725 |
| (manufacturer not verified) | 37242 |
| MICRO PORE | PM30 |
| MOBIL 1 | MC35 |
| MOPAR | L23 |
| MOTAQUIP | 1107411 |
| MOPAR | L97 |
| MOTORCRAFT | EFL275 |
| MOTORCRAFT | EFL184 |
| MOTORCRAFT | EFL217 |
| MOTORCRAFT | FL89 |
| MOTORCRAFT | FL41 |
| NAPA GOLD | 1021 |
| NAPA GOLD | 1239 |
| (manufacturer not verified) | 88280A |
| (manufacturer not verified) | WF30P |
| (manufacturer not verified) | 3876100 |
| (manufacturer not verified) | 3890200 |
| (manufacturer not verified) | FS21776U |
| NUMBER | 2940121412604 |
| (manufacturer not verified) | 103825 |
| (manufacturer not verified) | 1168469 |
| (manufacturer not verified) | 14525 |
| OLIVER | 26404 |
| OLIVER | 7A5507 |
| ONAN | 60369A |
| (manufacturer not verified) | 221046Z20 |
| (manufacturer not verified) | 35575 |
| (manufacturer not verified) | 3575 |
| PBR | AC3035 |
| (manufacturer not verified) | FH125 |
| PERRY | PL42 |
| POWERPART | AM041907 |
| POWERPART | AM041908 |
| PURFLUX | L423 |
| PURFLUX | L438 |
| PURFLUX | L499 |
| PURFLUX | L502 |
| PUROLATOR | L47356 |
| PUROLATOR | L40035 |
| PUROLATOR | OX80 |
| PUROLATOR | P35 |
| PUROLATOR | P521 |
| PUROLATOR | PB3015 |
| PUROLATOR | PM3015 |
| PUROLATOR | PM356D |
| (manufacturer not verified) | 951745 |
| (manufacturer not verified) | 20 |
| (manufacturer not verified) | 20C |
| (manufacturer not verified) | 122407 |
| RENAULT | 644700123 |
| RENAULT | 944700123 |
| RENAULT | 944700126 |
| REO | 1319A6 |
| REO | 1653A6 |
| REO | 328A6 |
| ROL-PAK | F30BP |
| RYCO | R2217 |
| RYCO | R2217P |
| RYCO | R30 |
| SAKURA | O2621 |
| SAKURA | O2627 |
| (manufacturer not verified) | 1311281001 |
| SAVARA | 92002417 |
| SAVARA | 209620 |
| SAVARA | 92005817 |
| SAVARA | 92285817 |
| SAVARA | 92085817 |
| SAVARA | 92025817 |
| SAVARA | 92400617 |
| SAVARA | 92413117 |
| SAVARA | 924141 |
| (manufacturer not verified) | 7171 |
| (manufacturer not verified) | E530 |
| (manufacturer not verified) | E531 |
| (manufacturer not verified) | X13372 |
| (manufacturer not verified) | X13373 |
| (manufacturer not verified) | X8714 |
| (manufacturer not verified) | X8790 |
| (manufacturer not verified) | 2113 |
| (manufacturer not verified) | 310284 |
| SOPARIS | CAP330 |
| SOPARIS | CA6 |
| SOPARIS | CA7 |
| SOPARIS | CA93 |
| SOPARIS | CAP292 |
| (manufacturer not verified) | CA260 |
| (manufacturer not verified) | SRP105 |
| STAY READY | SRPW40 |
| STAY READY | SRP30 |
| STAY READY | SRPF30 |
| STEYR-DAIMLER-PUCH | 413907111 |
| (manufacturer not verified) | 196646 |
| (manufacturer not verified) | 520831 |
| (manufacturer not verified) | 951745 |
| STEYR-DAIMLER-PUCH | 559001000345 |
| STEYR-DAIMLER-PUCH | 55900100345 |
| (manufacturer not verified) | 614040111 |
| (manufacturer not verified) | 614070111 |
| (manufacturer not verified) | 614070263 |
| (manufacturer not verified) | 61407105 |
| STP | 1685268 |
| STUDEBAKER | 520831 |
| STUDEBAKER | 520985 |
| STUDEBAKER | 521926 |
| STUDEBAKER | 662111 |
| STUDEBAKER | 662112 |
| STUDEBAKER | 663776 |
| STUDEBAKER | 678356 |
| STUDEBAKER | AC1678 |
| STUDEBAKER | AC2475 |
| STUDEBAKER | AC2678 |
| TECFIL | L90 |
| TECNOCAR | OP340 |
| TEHO FILTER | D63 |
| TOWMOTOR | 631198 |
| TOWMOTOR | 636372 |
| TOWMOTOR | A636372 |
| (manufacturer not verified) | 220026 |
| (manufacturer not verified) | 2200266 |
| (manufacturer not verified) | 2200269 |
| (manufacturer not verified) | 4613117 |
| (manufacturer not verified) | 46131170 |
| (manufacturer not verified) | 4503973 |
| (manufacturer not verified) | 45039735 |
| (manufacturer not verified) | 70220026 |
| (manufacturer not verified) | B3972 |
| (manufacturer not verified) | B3973 |
| (manufacturer not verified) | 75613117 |
| (manufacturer not verified) | 295012001 |
| (manufacturer not verified) | 2001600 |
| UFI FILTERS | 2543400 |
| UFI FILTERS | 2543401 |
| (manufacturer not verified) | FC30 |
| (manufacturer not verified) | FS21776U |
| VOLVO | 466176 |
| VOLVO | 408695 |
| VOLVO | 702167 |
| VOLVO | VOE408695 |
| VOLVO | VOE466176 |
| VOLVO | VOE702167 |
| (manufacturer not verified) | TD600L4000 |
| (manufacturer not verified) | 101713 |
| (manufacturer not verified) | U17R4V |
| (manufacturer not verified) | 50222 |
| (manufacturer not verified) | 553643 |
| WAUKESHA | 154440 |
| WAUKESHA | 15451A |
| (manufacturer not verified) | 60369 |
| (manufacturer not verified) | 60389 |
| (manufacturer not verified) | 6982 |
| (manufacturer not verified) | 950964 |
| (manufacturer not verified) | 951475 |
| (manufacturer not verified) | 951745 |
| (manufacturer not verified) | 952218 |
| (manufacturer not verified) | A154451A |
| (manufacturer not verified) | P30 |
| (manufacturer not verified) | S3C |
| (manufacturer not verified) | X30 |
| WGB | SEC |
| WHITE | 1268821 |
| WHITE | 1269483 |
| WHITE | 1274838 |
| WHITE | 1319A6 |
| WHITE | 1653A6 |
| WHITE | 216763 |
| WHITE | 2CJ0611 |
| WHITE | 2CJ0807 |
| WHITE | 26404 |
| WHITE | 2ZJ0611 |
| WHITE | 2ZJ0807 |
| WHITE | 328A6 |
| WHITE | 7A5507 |
| WINSLOW | WF30 |
| WINSLOW | WF30P |
| WINSLOW | WCF30 |
| (manufacturer not verified) | WRC40 |
| WITTE | 10214 |
| WITTE | 11767 |
| WIX | 51021 |
| WIX | 51239 |
| WIX | 5FP |
| WIX | CW239M |
| WIX | PC5F |
| WOODGATE | WGL3357 |
| WOODGATE | WGL572 |
| (manufacturer not verified) | FLR20003 |
| YALE | 282K99 |
| ZETTELMEYER | 3078220 |
| (manufacturer not verified) | 30782201 |
| (manufacturer not verified) | M7822 |
| (manufacturer not verified) | 21862400 |
Source: Baldwin Manufacturers' Cross-Reference, Form 560-24 (2024). Baldwin's published direction is manufacturer part → Baldwin replacement. This list shows what Baldwin published in 2024. It does not verify that the numbers interchange today.
Upgrade chains run one way: equipment spec'd with a newer filter number should not step back to the older one. Go by what the truck was spec'd with.
Always verify against the current OEM catalog before ordering. Cross references are a starting point, not a guarantee of fit.