
BMW M54B25 2.5 Straight-Six Engine
2.5L Inline-6 · 192 hp · 181 lb-ft
In stock
Crate V8s, remanufactured long blocks, JDM legends and diesel workhorses — each one listed with the full specification sheet, and photographed on our floor or modelled in 3D so you can see exactly what you are buying before you commit.
Browse by type
Every category is filtered on the same specification data, so you can compare a crate V8 against a remanufactured diesel on equal terms.
Hand-picked
The units our builders would put in their own cars this month.

2.5L Inline-6 · 192 hp · 181 lb-ft
In stock

2.4L Inline-4 · 158 hp · 162 lb-ft
In stock

3.0L Inline-6 · 268 hp · 232 lb-ft
In stock

2.0L Inline-4 · 140 hp · 236 lb-ft
In stock

3.2L VR6 · 250 hp · 236 lb-ft
Only 2 left

1.8L Inline-4 · 132 hp · 128 lb-ft
In stock
Why Engine Junction
Most engine listings are a photograph and a phone number. We publish the whole file.
Compression figures, leak-down sheets, dyno plots and service history ship with the listing. If we cannot prove a number, we do not print it.
Listings carry an interactive model you can orbit, zoom and measure against your bay before you spend a cent on freight.
Every remanufactured and crate unit runs on the dyno before it is crated. The plot goes in the box with the engine.
From six months on a documented used pull to thirty-six on a reman diesel, backed in writing and honoured without argument.
Steel-framed crates, foam-blocked accessories and full transit insurance. Free freight on anything over fifteen thousand dollars.
The people answering your questions have assembled these engines. Send us your chassis and we will tell you what actually clears.
Under the hammer
Rare and collectable lots, open for bidding. A bid in the closing minutes extends the clock, so nothing is won on reflexes alone.
3.0L · Inline-6 · 320 hp
Current bid
$9,500
3.0L · Inline-6 · 425 hp
Opening bid
$8,000
6.2L · V8 · 807 hp
Current bid
$22,000
Just landed

1.8L Inline-4 · 132 hp · 128 lb-ft
In stock

1.6L Inline-4 · 122 hp · 113 lb-ft
In stock

2.4L Inline-4 · 158 hp · 162 lb-ft
In stock

1.8L Inline-4 · 118 hp · 115 lb-ft
In stock
Powerplants we stock
How it works
Filter on displacement, layout, aspiration and output, then check the fitment list against your chassis.
Turn the 3D model over, read the test data and the service history, and ask our builders anything the sheet does not cover.
Stock is held the moment you order. We block, crate and insure it, and send the freight reference the same week.
Torque specs, harness pinouts and tuning notes come with the engine, and the phone line stays open after it lands.
Send us the chassis, the transmission and what you want out of it. A builder will come back with the two or three engines that actually make sense — and the ones that do not.